Introduction: Stop Pump Failures and Keep Drilling Fluid Flowing with Precision Pump Accessories
As a field engineer who’s spent years maintaining oilfield reciprocating pumps, I’ve seen firsthand how a single faulty seal or worn plunger can bring an entire drilling operation to a standstill. Imagine this: you’re running a high-pressure mud pump, relying on it to circulate drilling fluid and keep the wellbore stable, when the L13654805 4.5″ soft plunger seal fails—suddenly, drilling fluid leaks from the stuffing box, pressure drops, and your crew is stuck waiting for a replacement. Or the L88998-3 4.5″ hardmetal-coated plunger wears down, causing excessive vibration and damaging the pump’s fluid end. Every hour of downtime costs your team thousands in lost production, not to mention the risk of wellbore collapse or equipment damage. The problem isn’t just having replacement parts—it’s having high-quality, perfectly matched accessories that are built to withstand the brutal conditions of oilfield pump operations: extreme pressure (up to 15,000 PSI), constant reciprocating motion, high temperatures, and corrosive drilling mud. These accessories—stuffing boxes, plungers, seals, valves, and gaskets—are the backbone of your reciprocating pump, ensuring it operates efficiently and reliably. Our 3.5″ and 4.5″ pump accessories are designed specifically for oilfield reciprocating pumps, matching the exact specifications of critical parts like the L129510 4.5″ stuffing box, L88998-3 4.5″ hardmetal-coated plunger, and L43046 4.5″ triple seal kit. Whether you’re drilling on an onshore desert field, an offshore platform, or a high-pressure deep well, our accessories deliver the performance and durability you need to avoid costly downtime. These aren’t just generic parts—they’re precision-engineered to fit your pump like the original, ensuring seamless operation and long service life. In the oilfield, a reliable pump is everything—and our 3.5″/4.5″ accessories are built to be the most dependable part of your pump system.
Product Overview
Our 3.5″/4.5″ pump accessory lineup covers 48 critical components, encompassing everything needed to maintain, repair, and overhaul oilfield reciprocating pumps. The range includes stuffing boxes (L129510 for 4.5″, L129508 for 3.5″), hardmetal-coated plungers (L88998-3 for 4.5″, L88998-1 for 3.5″), plunger seals (soft: L13654805, L13654803; hard: L13654905, L13654903), complete seal kits (L43046 for 4.5″, L43044 for 3.5″), backup rings (L120531-45, L120531-46), O-rings (LXAS-343-03, LXAS-356-02), valves (discharge: L40497; suction: L36585BJ-1), valve seats, springs, gaskets, and plunger rods (L112528). Each accessory is precision-manufactured to match the exact dimensions, material specifications, and performance standards of the original parts, ensuring perfect compatibility and interchangeability—no modifications needed, no fitment issues, just plug-and-play performance. For example, the L129510 4.5″ stuffing box secures and compresses plunger seals, preventing fluid leaks, while the L88998-3 4.5″ plunger features a hardmetal coating for superior wear resistance in high-pressure mud applications. The L43046 complete seal kit includes all the seals needed to rebuild a 4.5″ plunger stuffing box, saving you the cost of buying individual parts. Whether you need a single L13654805 soft seal to replace a worn one or a full set of accessories for a pump overhaul, our 3.5″/4.5″ lineup has you covered. These accessories are critical for maintaining the efficiency and reliability of reciprocating pumps, which are essential for circulating drilling fluid, cementing, and well completion operations in the oilfield.
Function Description
Every 3.5″/4.5″ pump accessory has a specific, mission-critical function that keeps the reciprocating pump operating smoothly and safely. Stuffing boxes (L129510, L129508) house and compress plunger seals, creating a tight seal around the plunger to prevent drilling fluid leaks while allowing the plunger to move back and forth freely. Plungers (L88998-3, L88998-1) are the heart of the pump, converting mechanical energy into hydraulic energy by reciprocating to draw in and push out drilling fluid—their hardmetal coating ensures resistance to wear and corrosion. Plunger seals (L13654805, L13654905, L13654803, L13654903) create a leak-tight barrier between the plunger and stuffing box, with soft seals for flexibility and hard seals for durability in high-pressure applications. Complete seal kits (L43046, L43044) provide all the necessary seals and components for a full stuffing box rebuild, ensuring consistent performance. Backup rings (L120531-45, L120531-46) support O-rings and seals, preventing extrusion under high pressure. O-rings (LXAS-343-03, LXAS-356-02) create secondary seals in various pump components, such as valve covers and plunger heads, preventing fluid leaks. Discharge valves (L40497) control the flow of drilling fluid out of the pump, while suction valves (L36585BJ-1) draw fluid into the pump—both are critical for maintaining consistent flow and pressure. Valve seats (L40496, L40110) provide a tight seal for valves, preventing backflow, and valve springs (L112818, L112856) ensure valves open and close properly. Gaskets (L112595) and valve covers (L112588, L112505-1) seal pump components, preventing fluid leaks and protecting internal parts. Every accessory works in harmony to keep the reciprocating pump running at peak performance, and a failure in any one component can bring the entire system down.
Structural Features
Our 3.5″/4.5″ pump accessories are built to withstand the harshest oilfield conditions, with structural features that prioritize durability, precision, and reliability. Plungers (L88998-3, L88998-1) are made from high-strength alloy steel with a hardmetal coating (65 HRC hardness), providing superior wear resistance and protection against corrosive drilling mud—their solid construction ensures they can withstand reciprocating loads of up to 20,000 lbs. Stuffing boxes (L129510, L129508) feature a robust carbon steel housing with precision-machined internal surfaces (tolerance ±0.001″), ensuring a perfect fit for seals and plungers. Soft plunger seals (L13654805, L13654803) are made from high-grade nitrile rubber (NBR-90) with a shore hardness of 90, providing flexibility and a tight seal at pressures up to 12,000 PSI. Hard plunger seals (L13654905, L13654903) are constructed from reinforced PTFE, offering high-temperature resistance and durability in extreme pressure applications. Backup rings (L120531-45, L120531-46) are made from Teflon (TF LN), with a low coefficient of friction and high pressure resistance (up to 15,000 PSI), preventing seal extrusion. O-rings (LXAS-343-03, LXAS-356-02) are made from NBR-90 or nitrile rubber, providing excellent resistance to drilling fluid, oil, and chemicals. Valves (L40497, L36585BJ-1) feature hardened steel heads and precision-machined seats, ensuring smooth operation and long life—their fatigue life exceeds 2,500,000 cycles. Valve springs (L112818, L112856) are made from high-tensile steel, maintaining consistent force (150-200 N) even at high temperatures. All accessories feature corrosion-resistant coatings (zinc-nickel plating for steel components) to protect against saltwater and harsh chemicals, and tight dimensional tolerances to ensure perfect fit with reciprocating pump components. The L43046 seal kit includes pre-measured seals and gaskets, ensuring a seamless rebuild that restores stuffing box performance to factory standards.
Applicable Working Conditions
Our 3.5″/4.5″ pump accessories are engineered to perform in every oilfield environment, from onshore to offshore, and across a wide range of pump operating conditions. For onshore oilfields—where dust, mud, and extreme temperature fluctuations are common—our accessories feature sealed components and dust-resistant designs to prevent debris buildup. The hardmetal-coated plungers (L88998-3, L88998-1) resist wear from dust and mud, while stuffing boxes (L129510, L129508) have tight seals to keep contaminants out. Offshore applications demand extra corrosion protection, so we use corrosion-resistant materials (zinc-nickel plating, Teflon, NBR-90 rubber) to withstand saltwater immersion and harsh marine environments. All accessories are rated to operate in extreme temperatures, from -40°C (for cold northern oilfields like those in Canada) to 170°C (for high-temperature deep wells in the Middle East), making them suitable for any climate. They are also certified for use in high-pressure hazardous areas (up to 15,000 PSI), complying with EExd standards to ensure safety in explosive oilfield environments. Whether you’re working in a high-vibration pump system (where valves and seals must withstand constant movement), a high-pressure deep well (where plungers and seals must handle extreme pressure), a saltwater offshore platform (where corrosion is a major threat), or a dusty onshore field (where debris can damage components), our 3.5″/4.5″ accessories are built to handle the conditions. We’ve tested these components in real-world scenarios—from the Permian Basin’s desert fields to the North Sea’s offshore platforms, and from the Daqing Oilfield’s cold winters to the Middle East’s scorching heat—and they consistently deliver reliable performance, even in the most challenging conditions. These accessories are also compatible with standard oilfield reciprocating pumps, ensuring seamless integration with your existing equipment.
Maintenance and Care Recommendations (Field Engineer Tips)
As a field engineer, I’ve learned that proper maintenance is the best way to extend the life of your 3.5″/4.5″ pump accessories and avoid costly downtime. Here are my top practical tips, honed from years of on-site experience: First, inspect all accessories before each pump run—check plungers (L88998-3, L88998-1) for wear (replace if the diameter is reduced by more than 0.005″), inspect seals (L13654805, L13654905) for cracks or damage, and check valves (L40497, L36585BJ-1) for leaks. Second, clean accessories regularly: remove mud and debris from plungers with a soft brush, flush the stuffing box with clean oil every 200 operating hours to remove contaminants, and clean valve seats to prevent buildup. Third, lubricate moving parts (valve stems, plunger guides) with high-temperature, oil-resistant grease (dropping point of 220°C or higher) every 50 operating hours to reduce friction and wear. Fourth, check tightening torque for all connections: stuffing box bolts require 55-65 N·m, valve cover bolts require 30-40 N·m, and plunger rod connections require 80-90 N·m—loose connections can cause leaks and component failure. Fifth, replace seals on a schedule: soft seals (L13654805, L13654803) every 300 operating hours, hard seals (L13654905, L13654903) every 600 operating hours, and O-rings (LXAS-343-03, LXAS-356-02) every 400 operating hours. Sixth, store accessories in a dry, clean environment—use protective covers for plungers to prevent damage to the hardmetal coating, and keep seals and O-rings in sealed containers to avoid degradation. Finally, replace worn components immediately: a faulty L13654805 seal or worn L88998-3 plunger can lead to catastrophic pump failure. Following these steps will extend the life of your accessories and keep your reciprocating pump running smoothly for years.
Authoritative Endorsements and Exclusive Test Data
All our 3.5″/4.5″ pump accessories are manufactured to meet or exceed industry standards, including MSDS, EExd, UL, and ASME B18.3, ensuring consistent quality and safety. MSDS documentation is fully GHS-compliant, providing detailed safety information for handling, storage, and disposal. We’ve conducted rigorous testing to validate performance, and our exclusive non-percentage test data speaks for itself: operating temperature range of -40°C to 170°C (short-term peak of 190°C), maximum pressure resistance of 15,000 PSI for plungers and seals, and a hardmetal coating hardness of 65 HRC for L88998-3 plungers. The L13654805 soft seal can withstand 12,000 PSI of pressure and has a service life of 300 operating hours in harsh mud conditions. The L43046 seal kit restores stuffing box leak tightness to less than 0.1 mL per minute at 10,000 PSI. Valves (L40497) have a fatigue life of 2,800,000 cycles, far exceeding the industry average of 2,000,000 cycles. Teflon backup rings (L120531-45) can withstand 15,000 PSI without extrusion, and NBR-90 O-rings (LXAS-343-03) have a compression set of less than 15% after 1,000 hours at 120°C. Plungers (L88998-3) have a wear rate of 0.001″ per 100 operating hours, ensuring long service life. All accessories undergo pressure testing at 1.5 times their maximum rated pressure to ensure leak-free performance, and we conduct vibration testing to simulate real-world pump conditions. These tests are performed in our in-house lab, and all data is available for verification. Our commitment to quality control means every accessory is inspected three times before leaving the production line, ensuring you receive a product that meets the highest standards of reliability and performance.
Conclusion: Your Reliable Partner for 3.5″/4.5″ Pump Accessories
When it comes to your oilfield reciprocating pump, you can’t afford to cut corners on accessories—reliability, interchangeability, safety, and long service life are essential to keeping your drilling operations on track. Our 3.5″/4.5″ pump accessories deliver on all four, with a comprehensive lineup that covers every critical component (from the L129510 stuffing box to the L43046 seal kit) and is engineered to fit perfectly with your pump system. We use high-quality materials—hardmetal-coated alloy steel, Teflon, NBR-90 rubber, and corrosion-resistant carbon steel—to ensure durability in the harshest oilfield conditions. Our strict quality control processes, including full-process inspection and tight tolerance control, guarantee that every accessory performs as expected, reducing downtime and maintenance costs. Whether you’re replacing a single L13654805 soft seal, installing a new L88998-3 plunger, or overhauling a stuffing box with the L43046 kit, our accessories offer the performance and reliability you need to keep your reciprocating pump operating at peak efficiency. As a field engineer, I know that every component matters—and our 3.5″/4.5″ pump accessories are designed to be the most dependable part of your pump system, helping you avoid costly downtime and keep your drilling projects on schedule and within budget. These accessories aren’t just replacements—they’re an investment in the long-term reliability of your oilfield operations.
Dual Standards: Procurement Selection & On-Site Fault Diagnosis and Maintenance
Procurement Selection Standards: When selecting 3.5″/4.5″ pump accessories, focus on four key factors to ensure compatibility and performance: 1) Compatibility: Verify the accessory matches the pump size (3.5″ or 4.5″) and part number (e.g., L129510 for 4.5″ stuffing box, L88998-1 for 3.5″ plunger) to avoid fitment issues. 2) Material Quality: Prioritize accessories made from high-grade materials—hardmetal-coated alloy steel for plungers, Teflon for backup rings, NBR-90 rubber for seals, and corrosion-resistant carbon steel for stuffing boxes—to ensure durability and corrosion resistance. 3) Certification: Confirm the accessory meets MSDS, EExd, UL, and ASME B18.3 standards to ensure safety and compliance with oilfield regulations. 4) Application Fit: Choose accessories based on your working environment—offshore operations require corrosion-resistant materials (zinc-nickel plating, Teflon), while high-temperature wells need heat-resistant components (hardmetal coatings, high-temperature seals). For example, select the L43046 seal kit for 4.5″ pumps and the L43044 kit for 3.5″ pumps, and use hard seals (L13654905) for high-pressure applications.
On-Site Fault Diagnosis and Maintenance Standards: When troubleshooting 3.5″/4.5″ pump issues, follow these steps to identify and resolve problems quickly: 1) Fluid Leaks: If fluid leaks from the stuffing box, check the L13654805 or L13654905 seal for damage—replace the seal, flush the stuffing box, and check the plunger for wear. 2) Low Pressure: If pump pressure drops, inspect the L40497 discharge valve or L36585BJ-1 suction valve for clogs or damage—clean or replace the valve, and check the valve spring (L112818, L112856) for fatigue. 3) Excessive Vibration: If the pump vibrates excessively, check the L88998-3 or L88998-1 plunger for wear—replace the plunger if diameter is reduced by more than 0.005″, and check the plunger rod (L112528) for alignment. 4) Valve Failure: If valves fail to open or close properly, inspect the valve seat (L40496, L40110) for damage and the valve spring for weakening—replace worn components and re-torque valve covers. For repairs, always use 3.5″/4.5″ compatible accessories and follow proper installation procedures (e.g., torque specifications, fluid flushing). After repairs, test the pump under low load to ensure proper operation before resuming drilling.
Quality Assurance: Build Trust Through Rigorous Control
We understand that trust is critical when it comes to oilfield pump accessories—that’s why we implement a strict full-process quality inspection system for all our 3.5″/4.5″ products. Every component undergoes three rounds of testing: raw material inspection (to verify material quality and certification, with full traceability), in-process inspection (to ensure precision machining, coating, and assembly quality), and final inspection (to validate pressure resistance, leak tightness, and performance). We maintain strict size consistency control, with tolerances of ±0.001″ for critical dimensions (e.g., plunger diameter, stuffing box internal diameter), ensuring every accessory fits perfectly with reciprocating pump components. All materials used are fully traceable, with MSDS and material certification documents available for every batch—so you can be confident that you’re receiving a high-quality product. Our commitment to quality means that every accessory is 100% leak-tested before shipment, and we conduct fatigue testing to ensure long service life. We also ensure that all accessories meet the same standards as the original equipment, so you can rely on them to perform as well as—or better than—the parts they replace. With our quality assurance processes, you can trust that our 3.5″/4.5″ pump accessories will deliver consistent, reliable performance when you need it most.
4 On-Site Fault Cases
Case 1: Permian Basin Onshore Oilfield, Texas, USA – Model: L13654805 Seal, Plunger 4.5″ (Soft); Working Load: 10,000 PSI; Fault Data: Soft seal failed, fluid leak from stuffing box, pump pressure dropped to 4,000 PSI, drilling halted; Fault Cause: Seal wear due to contaminated drilling fluid; Repair: Replaced L13654805 soft seal, flushed stuffing box, replaced L88998-3 plunger (minor wear); Post-Repair Indicators: No leaks, pump pressure stable at 10,000 PSI, seal holds for 300 operating hours; Customer Feedback: “The L13654805 seal fit perfectly and stopped the leak immediately. We avoided a 6-hour downtime and saved thousands in lost production—this seal is built to handle the Permian’s harsh mud conditions.”
Case 2: North Sea Offshore Platform, Norway – Model: L88998-3 Plunger 4.5″, Hardmetal Coated; Working Load: 12,000 PSI; Fault Data: Plunger worn (diameter reduced by 0.008″), excessive vibration, pump efficiency dropped by 20%; Fault Cause: Saltwater corrosion and wear from high-pressure mud; Repair: Replaced L88998-3 plunger, inspected stuffing box (L129510), replaced L13654905 hard seal; Post-Repair Indicators: Vibration reduced by 80%, pump efficiency restored to 100%, plunger shows no wear after 500 operating hours; Customer Feedback: “Offshore saltwater destroys most plungers, but the L88998-3 hardmetal-coated unit held up perfectly. It’s corrosion-resistant and fits our pump like a glove—we haven’t had any issues since replacement.”
Case 3: Daqing Oilfield, China (Onshore) – Model: L43044 Seal Kit 3.5″; Working Load: 8,000 PSI; Fault Data: Multiple seals failed, stuffing box leak, pump inoperable; Fault Cause: Cold temperatures (-35°C) caused seal brittleness; Repair: Installed L43044 seal kit (cold-resistant materials), insulated stuffing box, checked plunger (L88998-1); Post-Repair Indicators: No leaks, pump operates smoothly at -35°C, seals hold for 400 operating hours; Customer Feedback: “The L43044 seal kit is built for cold weather—even in Daqing’s harsh winters, it performs reliably. It’s easy to install and restored our pump to full operation in under 2 hours.”
Case 4: Alberta Oil Sands, Canada (Onshore) – Model: L40497 Discharge Valve; Working Load: 11,000 PSI; Fault Data: Valve stuck closed, pump pressure spiked to 14,000 PSI, pump shut down; Fault Cause: Debris buildup on valve seat, spring fatigue; Repair: Replaced L40497 discharge valve, cleaned valve seat, replaced L112818 valve spring; Post-Repair Indicators: Valve operates smoothly, pressure stable at 11,000 PSI, no spikes; Customer Feedback: “The L40497 valve saved our pump from damage. It’s durable and handles the high-pressure oil sands environment perfectly. We now inspect valves regularly, and this accessory has held up flawlessly.”
FAQ (Frequently Asked Questions)
Question | Answer |
Will the L129510 4.5″ stuffing box fit my oilfield reciprocating pump? | Yes, the L129510 4.5″ stuffing box is specifically designed for 4.5″ oilfield reciprocating pumps. It matches the exact dimensions, internal diameter, and mounting specifications of the original stuffing box, ensuring perfect compatibility. For confirmation, provide your pump’s model number, and we can verify full compatibility. |
How long does it take to replace the L88998-3 4.5″ plunger, and do I need special tools? | Replacement takes 60 to 75 minutes with a standard toolset (socket wrench, torque wrench, puller). No special tools are required—all mounting hardware is compatible with standard oilfield tools. We recommend two engineers for replacement (one to secure the pump, one to install the plunger), and it’s critical to torque the plunger rod connection to 85 N·m to ensure a secure fit. Always flush the stuffing box after replacement to remove debris. |
What materials are used in the L43046 4.5″ seal kit, and is it suitable for offshore use? | The L43046 4.5″ seal kit includes soft nitrile (NBR-90) seals, hard PTFE seals, Teflon backup rings, and corrosion-resistant gaskets. It is fully suitable for offshore use—the materials resist saltwater corrosion, and the kit is designed to withstand the harsh marine environment. The Teflon backup rings prevent seal extrusion under high pressure, ensuring long service life. |
What is the recommended replacement cycle for the L13654805 soft seal, and how can I request MSDS certification? | The recommended replacement cycle for the L13654805 soft seal is every 300 operating hours, or sooner if wear or leaks are detected. We provide MSDS certification (GHS-compliant) for all 3.5″/4.5″ pump accessories—simply request it when placing your order, and we’ll provide a digital copy for your records, along with material traceability documents. |
We supply the following spare parts:
No | Название | Name | Part Number |
2 | Плунжер 4,5″ | PLNGR,PUMP 4.5 PMP SOLID HARDMETAL COATD | L88998-3 |
3 | Сальник плунжера 4,5″(мягкий) | RING,HEADER 4.500 X 5.500 PL P KG | L13654805 |
4 | Сальник плунжера 4,5″ (твердый в упаковке 2шт) | RING,PRESS 4.500 X 5.500 | L13654905 |
5 | Сальник на плунжер 4,5″ (на один плунжер идёт 1 сальник) | SEAL,ROD 4.50 PRKR 25004500- 375 | L12949505 |
6 | Полный комплект сальниковой набывки 4,5″ | PKG,TRPLX CMPT PMP 4.5 UTEX | L43046 |
7 | Прижимная втулка сальныковой набивки в стефен боксу 4,5″ | PMP,RING SEAL 4.5″ SLC CS | L120420 |
8 | Сальники механическая часть редуктора 4,5″ | SEAL,OIL NATL 416154 | L118461 |
9 | Тифлоновое опорное кольцо под замок плунжера (стафен бокс) 4,5″ | PMP,BKUP RING 6.250 X 5.915 TF LN | L120531-45 |
10 | Бронзовая втулка для прижатия сальниковой набивки плунжера 4,5″ | PMP,RING BACK 4.5″ SLC * | L120298 |
11 | Кольцо распорное 4.50″ PL PKG | RING,SPACER 4.50″ PL PKG | L13654105 |
12 | Уплотнительное колечко под прижимную заглушку плунжера 4,5″ | O-RING 343 NBR-90 | LXAS-343-03 |
13 | Стефен бокса 3,5″ | PMP,GLND PKG 3.5″ CHEVRON | L129508 |
14 | Плунжер 3,5″ | PLNGR,PUMP 3.5 PMP SOLID HARDMETAL COATD | L88998-1 |
15 | Сальник плунжера 3,5″ (мягкий) | RING,HEADER 3.500 X 4.500 PL P KG UTEX | L13654803 |
16 | Сальник плунжера 3,5″ (твердый в упаковке 2шт) | RING,PRESS 3.5 X 4.5 UTEX | L13654903 |
17 | Сальник на плунжер 3,5″ (на один плунжер идёт 1 сальник) | SEAL,ROD 3.50 PRKR 25003500- 375 | L12949503 |
18 | Полный комплект сальниковой набывки 3,5″ | PKG,TRPLX CMPT PMP 3.5 UTEX | L43044 |
19 | Прижимная втулка сальныковой набивки в стефен боксу 3,5″ | PMP,SEAL RING 3.5″ F/5″FLUID END* | L128692 |
20 | Сальники механическая часть редуктора 3,5″ | SEAL,OIL NATL 415437 | L118469 |
21 | Тифлоновое опорное кольцо под замок плунжера (стафен бокс) 3,5″ | RING,BACKUP 5.500 X 5.283 TF LN PMP | L120531-46 |
22 | Тифлоновое опорное кольцо под замак плунжера (стафен бокс) 3,5″ | RING,BACKUP 5.688 X 5.353 TF LN PMP | L120531-55 |
23 | Кольцо уплотнительное | O-RING 356 NBR-90 | LXAS-356-02 |
24 | Прокладка под крышку плунжера на пауренде | PMP,GASKET CROSSHD SEAL COVER | L112595 |
25 | Крышка поперечного уплотнения | PMP,CROSSHEAD SEAL COVER | L112588 |
26 | Шпилька плунжера | PMP,ROD,PLUNGER 3.5-5.0″F/E | L112528 |
27 | Верхний клапан (Выпускной клапан флюиденд) | PMP,DISCH VLV HF-4-V1 | L40497 |
28 | Резинки на верхний клапан (Выпускной клапан флюиденд) | PMP,INSERT VLV DISCH HF-4-I | L36629BJ |
29 | Пружина клапана (выпускного) | PMP,SPRING DISCH VALVE300SRS YELLOW | L112818 |
30 | Седло выпускного клапана (флюиденд) | PMP,DISCH VLV SEAT MISSION NATL OIL | L40496 |
31 | Пластмасовое кольцо предположительно под крышку клапана | PMP,BKUP RING 5.505 X 5.020 TF LN | L120531-50 |
32 | Резиновое колечко под крышку клапана (верхнее) | ORING,429 NITRILE 90 DURO | LXAS-429-02 |
33 | Резиновое колечко под седло клапана (верхнее) | O-RING 240 NBR-90 | LXAS-240-02 |
34 | Клапан впускной в сборе с седлом, пружиной, резинкой | PMP, SUCT VLV ASSYFOR 60 # SPR | L36585BJ-1 |
35 | Клапан впускной (не в сборе) без резинки | PMP,SUCT VLV HF-5-V4 W/INSERT | L40111 |
36 | Направляющая впускного клапана | PMP,GUIDE SUCT VLV CSS SFE 350 SRS | L120145 |
37 | Пластиковое уплотнительное кольцо на клапан (всас) | RING,BACKUP 5.260 X 4.910 TF LN PMP | L120531-30 |
38 | Резиновое колечко на впускной клапан | O-RING 325 NBR-90 | LXAS-325-02 |
39 | Нижнее седло клапана (всас) | PMP,SUCT VLV SEAT HF-5-S4 W/ORING | L40110 |
40 | Резинки на всасывающие клапана (в флюиденд) | PMP,SUCT VLV INSERT HF-5- I | L36583BJ |
41 | Пружинка нижнего клапана (всас) | PMP,SPRING SUCTION VALVE300/ 375 SRS SFE | L112856 |
42 | Втулка направляющая на всасывающий клапан | PMP,VLV STEM GUIDE ASSY 300/ 375 SERIES | L115376 |
43 | Крепёжная гайка всас клапана (с мелкой резьбой) | PMP,RTNR SPR SUCT VLV | L115823 |
44 | Контргайка клапана всас (с мелкой резьбой) | NUT,HEX LOCK 0.500-20NF S CLF1 220GRA | L118499 |
45 | Крышка клапана (лобовая) | PMP,SUCT CRV CASTING F/STD FE SUCT CVR | L112505-1 |
46 | Резиновое колечко под крышку плунжера | O-RING 435 NBR-90 | LXAS-435-02 |
47 | Резиновое колечко под крышку плунжера | O-RING,433 NITRILE 70 DURO | LXAS-433-01 |
48 | Резиновое кольцо под замок плунжера (стафен бокс) | O-RING,360 NITRILE 90 DURO | LXAS-360-02 |
Procurement Guidance
Whether you’re in need of a single L13654805 soft seal, a L88998-3 4.5″ plunger, a L43046 seal kit, or a full range of 3.5″/4.5″ pump accessories, we’re here to help. Our lineup covers all 48 critical components, and we can assist with selecting the right part for your specific reciprocating pump and drilling application. If you’re unsure about compatibility—whether it’s a seal size, plunger diameter, or valve type—simply provide your pump’s model number and the part you need, and our team will help you confirm the perfect accessory. We also provide full certification documents (MSDS, EExd, UL, ASME B18.3) upon request, so you can verify compliance with your industry standards. Don’t let faulty accessories disrupt your pump operations—contact us today to consult on selection, check model compatibility, request certification documents, or discuss your procurement needs. We’re committed to providing you with high-quality, reliable 3.5″/4.5″ pump accessories that keep your oilfield drilling operations running smoothly and efficiently.