23 Feb 2026

Drilling & BOP Spare Parts (RS11851.05.01.03, AG27500130, AH100101081600)

Core Purpose & Equipment Adaptation

Our full-range spare parts are precision-engineered and supplied to perfectly match a wide range of critical drilling, well control, and industrial equipment, including HRSB RAM FORGED BOP (Blowout Preventer), FLYGT sensors and control systems, drawworks and gearboxes, cooling systems, air tube clutch assemblies (LT600×125), and rotary systems compliant with API Spec 16A (BOP equipment), API Spec 7K (drilling equipment), and ISO 9001 quality standards. Key compatible spare parts include BOP seals (RS11851.05.01.03, RS11930.22.02, RS11930.22.04), gearbox and drawworks parts (AG27500130, AG27500131, AG2750012000), cooling system components (AH100101081600 pump, AH100101190200 strainer), FLYGT parts (5188902-X4 sensor, 6858600 terminal plate), and V-belts (1X5ZV25J-7620, 2X4ZV25J-7620). We directly address the unique, on-site pain points of three core user segments—drilling operation teams, on-site maintenance technicians, and procurement professionals—each relying on our parts to keep critical equipment running safely, continuously, and without costly interruptions. Drilling operation teams face catastrophic risks from component failures: faulty BOP seals (RS series) can lead to well control incidents and blowouts, damaged FLYGT sensors cause misreadings and system shutdowns, worn gearbox parts (AG series) disrupt power transmission, and failed cooling pumps (AH100101081600) overheat equipment—all threatening worker safety and halting drilling operations. Maintenance technicians need easy-to-install, OEM-compatible parts with clear, practical guidance to resolve mechanical, hydraulic, and electrical faults quickly—without specialized training across dozens of component types and equipment models—saving critical time and reducing labor costs. Procurement professionals struggle with sourcing full-range, equipment-specific parts (for HRSB RAM FORGED BOP, FLYGT systems, AG-series gearboxes) that meet strict industry standards (API 16A, API 7K, ISO 9001), avoid ill-fitting components that cause repeated breakdowns, and align with tight budgets while ensuring compliance with safety regulations. The core purpose of our products is to eliminate these pain points by providing direct-fit, high-quality replacements for all mission-critical components—covering BOP seals, gearbox parts, sensors, cooling systems, clutches, belts, fasteners, and hydraulic fittings—all designed to withstand the harsh, high-pressure, high-vibration, and corrosive conditions of onshore/offshore drilling and industrial operations, reduce operational downtime, and ensure continuous, compliant equipment operation.

Product Overview

We offer a comprehensive portfolio of spare parts tailored to the specific needs of key drilling, BOP, and industrial systems, with key models including RS11851.05.01.03 TOP SEAL for HRSB RAM FORGED BOP, AG27500130 double bank chain wheel, AH100101081600 cooling pump, FLYGT 5188902-X4 sensor, and 1X5ZV25J-7620 light-up narrow V belt. Our product range encompasses fifteen critical categories to cover every on-site need: BOP seals (RS11851.05.01.03 top seal, RS11930.22.02 shear blade seal, RS11930.22.04 side seal), V-belts (1X5ZV25J-7620, 2X4ZV25J-7620), cooling system parts (AH100101081600 pump, AH100101190200 strainer), bladder and capsule (AK7535010200, AH00000050101), FLYGT components (5188902-X4 sensor, 6858600 terminal plate), couplings (GIICL12 ZB083.01 drum toothed coupling, ZB083.02 coupling), clutch and brake parts (LT600×125 air tube clutch, ZB083.03.00 brake mounting flange), gearbox and drawworks parts (AG27500130/AG27500131 chain wheels, AG27500101/AG27500102 pawls, AG2750012000 input shaft assembly), bearings (5692/800, 91682/800, GB283-64, ZS-4722), fasteners (M16×40 bolt, 5×35 cotter pin, GB93-87 spring washer), hydraulic fittings (93024-6JIC test fitting, 56519-8-8-S elbow), sensors and brackets (126927 sensor bracket), and rotary system parts (30124812 rotary ring glyd, 51300-383-8 O-ring). All parts are manufactured in strict compliance with API Spec 16A (BOP Equipment), API Spec 7K (Drilling Equipment), ISO 9001 (Quality Management), and relevant GB standards (GB1152-74, GB91-86), using premium materials selected for extreme durability and performance: high-temperature, pressure-resistant elastomers for BOP RS-series seals; hardened alloy steel for AG-series chain wheels, gears, and shafts; corrosion-resistant stainless steel for FLYGT sensors and cooling system parts; wear-resistant rubber for V-belts and bladders; and precision-machined metal for bearings and fasteners. Every part is a direct OEM-compatible replacement, engineered to exact dimensions, mechanical, and functional specifications to eliminate on-site modifications, reduce maintenance time, and ensure seamless integration with existing equipment—delivering long service life, reliable performance, and minimized replacement costs.

Functional Features

Our spare parts are designed to directly solve the most common on-site pain points—BOP seal leakage, gearbox malfunction, cooling system failure, sensor misreadings, and power transmission issues—with functional features that prioritize reliability, safety, durability, and ease of use, all tailored to drilling and industrial operations:

 OEM Direct Compatibility: Every component (e.g., RS11851.05.01.03, AG27500130, AH100101081600, FLYGT 5188902-X4) is precision-manufactured to match the original equipment’s specifications, enabling drop-in replacement without welding, machining, or adapter kits—cutting maintenance downtime from hours to minutes and reducing labor costs.

 Reliable BOP Seal Performance: BOP seals (RS11851.05.01.03 top seal, RS11930.22.02 shear blade seal, RS11930.22.04 side seal) for HRSB RAM FORGED BOP provide leak-proof sealing under extreme well pressures (up to 15,000 PSI), resist high temperatures and corrosive well fluids (H₂S/CO₂), and ensure reliable well control—critical for preventing blowouts and complying with API 16A standards.

 Gearbox & Power Transmission Efficiency: AG-series parts (AG27500130/AG27500131 double bank chain wheels, AG27500101/AG27500102 pawls, AG2750012000 input shaft assembly) ensure smooth power transmission for drawworks and gearboxes; chain wheels (P=50.8, Z=19/21) provide precise engagement, pawls prevent reverse rotation, and input shafts deliver stable torque—reducing component wear and avoiding power loss.

 Effective Cooling System Operation: AH100101081600 cooling pumps circulate coolant efficiently to prevent equipment overheating, while AH100101190200 strainers filter debris to protect the pump and system components—ensuring consistent cooling performance in harsh drilling environments.

 Accurate FLYGT Sensor Functionality: FLYGT 5188902-X4/7919900 EX6630400 sensors deliver precise readings for fluid level, pressure, or temperature monitoring; 6858600 terminal plates ensure secure electrical connections, preventing signal loss and system shutdowns—critical for automated control systems.

 Durable Power Transmission & Clutch Performance: 1X5ZV25J-7620/2X4ZV25J-7620 light-up narrow V belts provide reliable power transfer with high tensile strength and wear resistance; LT600×125 air tube clutches enable smooth engagement/disengagement, reducing shock loads on equipment; GIICL12 ZB083.01 drum toothed couplings absorb vibration and compensate for minor misalignment.

 Secure Hydraulic & Electrical Connections: Hydraulic fittings (93024-6JIC test fitting, 56519-8-8-S elbow) provide leak-proof connections for hydraulic lines; fasteners (M16×40 bolt, 5×35 cotter pin) meet GB standards for secure component mounting; O-rings (51300-383-8, 51300-278-8) ensure tight sealing for rotary and hydraulic systems.

Structural Characteristics

Each component is engineered with structural designs optimized for the rigorous mechanical, environmental, and safety demands of drilling and industrial operations—with structures tailored to their specific function, ensuring durability, safety, and performance in extreme conditions:

 BOP Seals: RS-series BOP seals (RS11851.05.01.03, RS11930.22.02, RS11930.22.04) feature a flexible, lip-style design with reinforced edges to withstand extreme pressure; they are made from high-performance elastomers bonded to a rigid backing (where applicable) for shape retention, ensuring tight sealing even with minor RAM misalignment.

 Gearbox & Chain Components: AG27500130/AG27500131 double bank chain wheels have precision-machined teeth with heat-treated surfaces for wear resistance; AG27500101/AG27500102 pawls have a rugged, curved design for secure engagement; AG2750012000 input shafts have hardened surfaces and precision-machined splines for stable torque transfer and reduced fatigue.

 Cooling System Parts: AH100101081600 cooling pumps have a compact, rugged design with corrosion-resistant impellers and sealed bearings to prevent coolant leakage; AH100101190200 strainers have a fine-mesh filter element (100-mesh) and a durable housing to trap debris while maintaining fluid flow.

 FLYGT Components: FLYGT 5188902-X4 sensors have a rugged, waterproof housing (IP67 rated) to withstand drilling mud and moisture; 6858600 terminal plates have a modular design with secure terminal blocks, ensuring easy wiring and resistance to vibration-induced loosening.

 V-Belts & Clutches: 1X5ZV25J-7620/2X4ZV25J-7620 V belts have a narrow profile with multiple grooves for increased contact area and power transfer; they are made from heat-resistant rubber with a polyester cord for high tensile strength. LT600×125 air tube clutches have a robust steel housing and flexible air tube for smooth engagement, with wear-resistant friction surfaces.

 Bearings & Fasteners: Bearings (5692/800, 91682/800, GB283-64) have a robust outer ring and precision rollers/balls for high load-bearing capacity; they are sealed to prevent debris and moisture entry. Fasteners (M16×40 bolt, GB93-87 spring washer) are made from high-tensile steel with corrosion-resistant plating, ensuring secure mounting even in high-vibration environments.

Applicable Working Conditions

Our spare parts are field-tested and rated for the most demanding drilling and industrial operating environments, with universal applicability across all key scenarios—ensuring reliable performance when it matters most, and compliant with API 16A, API 7K, and ISO 9001 standards:

 BOP Systems: RS11851.05.01.03, RS11930.22.02, and RS11930.22.04 BOP seals are suitable for HRSB RAM FORGED BOP, operating reliably under extreme pressures (up to 15,000 PSI) and temperatures (-20°C to +120°C), with resistance to corrosive well fluids (H₂S/CO₂) and drilling mud—complying with API 16A well control requirements.

 Gearboxes & Drawworks: AG-series parts (AG27500130, AG27500131, AG2750012000) operate in drawworks and gearboxes, withstanding high vibration, heavy loads, and temperature fluctuations (-18°C to +80°C), with resistance to drilling mud and moisture—ensuring smooth power transmission in drilling operations.

 Cooling Systems: AH100101081600 cooling pumps and AH100101190200 strainers operate in industrial and drilling cooling systems, with temperature resistance (-10°C to +90°C) and resistance to coolant contamination; they are suitable for use with water-glycol and oil-based coolants.

 FLYGT Systems: FLYGT 5188902-X4 sensors and 6858600 terminal plates operate in fluid monitoring and control systems, with resistance to drilling mud, moisture (IP67 rated), and temperature fluctuations (-20°C to +70°C)—suitable for onshore/offshore drilling and industrial applications.

 Power Transmission Systems: 1X5ZV25J-7620/2X4ZV25J-7620 V belts, LT600×125 air tube clutches, and GIICL12 ZB083.01 couplings operate in power transmission systems, withstanding high temperatures (up to 100°C), high vibration, and heavy loads—ensuring reliable power transfer.

 Hydraulic & Rotary Systems: Hydraulic fittings (93024-6JIC), O-rings (51300-383-8), and rotary parts (30124812) operate in high-pressure hydraulic and rotary systems, with resistance to hydraulic fluid contamination, corrosion, and temperature fluctuations (-18°C to +80°C).

 General Drilling & Industrial Environments: All parts resist drilling mud erosion, saltwater corrosion (coastal rigs), high humidity (≤95% RH), heavy vibration, and temperature fluctuations (-20°C to +120°C)—meeting API 16A, API 7K, and ISO 9001 standards. They are suitable for onshore/offshore drilling, well completion, workover operations, and general industrial applications.

Maintenance & Care Recommendations

Proper maintenance of spare parts is critical to extending service life, reducing replacement costs, and preventing unplanned equipment failure—especially in harsh drilling and industrial environments. Below are practical, on-site actionable guidelines—designed for ease of implementation by on-site technicians, with clear steps to keep parts performing reliably and compliant with API 16A and API 7K:

 Regular Inspection (40-60 Working Hours): Conduct visual and functional checks of all critical components—inspect BOP RS-series seals for cracks or wear; test AH100101081600 cooling pumps for flow and leaks; check FLYGT 5188902-X4 sensors for accurate readings; inspect AG-series chain wheels and pawls for wear; verify hydraulic fittings and O-rings for leaks; examine bearings for noise and vibration.

 BOP Seal Maintenance: Inspect BOP seals (RS11851.05.01.03, RS11930.22.02, RS11930.22.04) before each well control operation; clean seals with a lint-free cloth and inspect for damage—replace if cracks, tears, or compression set are present; store unused seals in a cool, dry place away from direct sunlight to prevent elastomer aging.

 Gearbox & Chain Parts Care: Lubricate AG-series chain wheels, pawls, and input shafts every 40 working hours with high-temperature, anti-wear lubricant; inspect chain wheel teeth for wear—replace if teeth are worn or chipped; check pawl engagement regularly to ensure secure operation; tighten loose fasteners to GB-specified torque.

 Cooling System Maintenance: Clean AH100101190200 strainer filters monthly to remove debris; replace filter elements every 6 months (or if clogged); check AH100101081600 cooling pump oil levels quarterly—top up with recommended lubricant; inspect pump seals for leaks—replace if damaged.

 FLYGT Components Care: Clean FLYGT 5188902-X4 sensors monthly to remove mud and debris—avoid using harsh chemicals that damage the sensor housing; inspect 6858600 terminal plates for loose connections—tighten terminals as needed; test sensor readings quarterly against a calibrated device to ensure accuracy.

 V-Belts & Clutches Maintenance: Inspect V-belts (1X5ZV25J-7620, 2X4ZV25J-7620) for wear, cracks, or stretching—replace if worn; adjust belt tension to manufacturer specifications to prevent slipping; lubricate LT600×125 air tube clutch bearings every 50 working hours; inspect clutch friction surfaces for wear—replace if worn thin.

 Timely Replacement of Worn Parts: Replace all components that show signs of wear, damage, or failure (e.g., worn BOP seals, leaking pumps, damaged sensors, chipped gear teeth); follow OEM replacement intervals for critical parts (BOP seals, bearings, V-belts); replace O-rings every 3-6 months (or if leaking) to maintain sealing performance.

 Proper Storage of Spare Parts: Store all spare parts in a dry, well-ventilated area (10°C-30°C) away from direct sunlight, drilling mud, and chemicals. Store BOP seals in anti-static, dust-free packaging; store bearings in their original packaging to protect against damage; store cooling system parts and sensors in a moisture-free environment; store fasteners in corrosion-resistant containers.

We supply the following spare parts:

TOP SEALRS11851.05.01.03 for HRSB RAM FORGED BOP

SHEAR BLADE SEAL RS11930.22.02

SIDE SEAL RS11930.22.04

Light-up narrow V belt 1X5ZV25J-7620 2X4ZV25J-7620

Bladder AK7535010200

Capsule AH00000050101

Pump of cooling AH100101081600

Strainer AH100101190200 

Light-up narrow V belt 1X5ZV25J-7620 2X4ZV25J-7620

Bladder AK7535010200

Capsule AH00000050101

Pump of cooling AH100101081600

Strainer AH100101190200 

FLYGT sensor 5188902-X4 7919900 EX6630400

TERMINAL PLATE FLYGT 6858600

DRUM TOOTHED COUPLING GIICL12 ZB083.01

COUPLING ZB083.02

AIR TUBE CLUTCH LT600×125

Brake mounting flange ZB083.03.00

Double bank chain wheel P=50.8 Z=19 AG27500130

Double bank chain wheel P=50.8 Z=21 AG27500131

Left pawl AG27500101

Right pawl AG27500102

Control rod pin AG27500103

Pawl pin AG27500104

OIL CUP M10×1 GB1152-74

Flange AG27500133

Baffle AG27500132

Input shaft assembly AG2750012000

Lower seal set AG27500122

O seal ring AG27500123

BEARING 5692/800 91682/800

Bearing 800× 950× 120 1681/800

Washer AG27500119

Big rig gear AG27500113

Lower seal set AG27500127

Stopper AG27500128

O seal ring AG27500129

Cotter pin 5×35 GB91-86

Spring washer 24 GB93-87

Bolt M16×40 GB30-76

Small bevel gear Me=18 Z=21 AG2750012001

O-seal ring 420×8.6 AG2750012003

Shaft AG2750012005

Washer 426×520×0.5 AG2750012006

Washer 322×400×1 AG2750012008

Shaft sleeve nut AG2750012011

Oil seal 180×220×18 HG4-692-67

BEARING GB283-64

BEARING GB286-64

Bearing M20×60 GB5782-86

Bolt M16×35 GB32-86

GEAR 646657

BEARING ZS-4722

88602 LOCKNUT

88604 LOCKWASHER

97997 RETAINING RING

97994 SLINGER, LOW GEAR OIL

97998 RETAINING RING

88601 LOCKNUT

88603 LOCKWASHER

116803 BEARING TAPER ROLLER

88600 BEARING, CYLINDRICAL ROLLER

93024-6JIC FITTING, TEST, JIC-6

50006-06-C5D SCREW, CAP-HEX, 0.38 UNC X 0 .75

56519-8-8-S ELBOW 90 37 O-RING

50008-8-C5D SCREW CAP-HEX .50 UNC X 100

126927 BRAKET SENSOR

56519-8-6-S ELBOW 90 37 O-RING

53250-5 FITTING, VENT 15-25 PSI

56529-8-6-S CONNECTOR O-RING BOSS/37″

51403-12-S PIN, COTTER, 3/16 X 1.5

50816-N-C WASHER FLAT. 1

55517-S NUT HEX- SLOTTED (UNF)

50910-C WASHER LOCK-REGULAR, 5/8

50010-14-C5D SCREW CAP-HEX. 0.68 UNC X 1.75

30124812 GLIYD, RING ROTARY 13,000 ROD

51300-383-8 O-RING, 13.975″ I.D, 0.210W

51300-278-8 O-RING, 11.984″ I.D, 0.139W

 

On-Site Fault Maintenance Cases

Case 1: BOP Leakage Due to Worn RS11851.05.01.03 Top Seal

A drilling rig experienced a critical BOP leakage during well control operations, caused by a worn RS11851.05.01.03 top seal for the HRSB RAM FORGED BOP. The seal had degraded from prolonged exposure to corrosive well fluids, leading to pressure loss and a potential well control incident. Solution: Replaced the worn RS11851.05.01.03 seal with our OEM-compatible part, cleaned the RAM surface, and pressure-tested the BOP to 15,000 PSI (API 16A standard). The BOP resumed leak-proof operation within 2 hours, eliminating the safety hazard and restoring well control functionality.

Case 2: Gearbox Malfunction from Damaged AG27500130 Chain Wheel

An oilfield operation’s drawworks gearbox malfunctioned due to a damaged AG27500130 double bank chain wheel (P=50.8, Z=19). The chain wheel teeth were chipped from excessive vibration and lack of lubrication, causing chain slippage and power loss. Solution: Replaced the damaged AG27500130 chain wheel with our direct-fit part, lubricated the chain and gears, and adjusted the chain tension. The gearbox resumed smooth power transmission within 1.5 hours, restoring drawworks operation and minimizing downtime.

Case 3: Cooling System Failure from Clogged AH100101190200 Strainer

A drilling rig’s cooling system failed, causing equipment overheating and a system shutdown. Inspection revealed the AH100101190200 strainer was clogged with debris, preventing coolant flow to the AH100101081600 cooling pump. Solution: Replaced the clogged strainer with our OEM-compatible part, flushed the cooling system to remove debris, and tested the pump for flow and pressure. The cooling system resumed full operation within 45 minutes, preventing further equipment damage and restoring drilling operations.

FAQ (Frequently Asked Questions)

FAQ

Answers

Are these spare parts compatible with my HRSB RAM FORGED BOP, FLYGT system, AG-series gearbox, or cooling system?

Yes—all parts (including RS11851.05.01.03, AG27500130, AH100101081600, FLYGT 5188902-X4) are precision-engineered to match the OEM specifications of HRSB RAM FORGED BOP, FLYGT sensors/terminal plates, AG-series gearboxes/drawworks, and cooling systems. They are direct drop-in replacements with no modifications needed, ensuring seamless compatibility and reliable performance.

Do your BOP seals, gearbox parts, and sensors meet drilling industry safety and quality standards?

Yes—all our spare parts comply with strict industry standards: BOP seals meet API Spec 16A (well control equipment), gearbox and drawworks parts meet API Spec 7K (drilling equipment), and all parts meet ISO 9001 quality standards and relevant GB standards (GB1152-74, GB91-86). BOP seals are pressure-tested to 15,000 PSI, sensors are IP67-rated, and gear parts are heat-treated for durability—ensuring compliance and reliable performance in harsh environments.

How do I select the correct spare part for my equipment, and what maintenance schedule should I follow?

Select parts by matching your equipment model (HRSB RAM FORGED BOP, FLYGT system, AG-series gearbox) or the original part number (e.g., RS11851.05.01.03, AG27500130, AH100101081600) with our product range—all part numbers align with OEM numbering systems. For maintenance, inspect parts every 40-60 working hours, lubricate moving components (chain wheels, bearings) every 40-50 hours, replace BOP seals/O-rings every 3-6 months (or when worn), and follow OEM intervals for critical parts to ensure safety, compliance, and long service life.

Procurement Guidance

In drilling and industrial operations, unplanned downtime, safety hazards, and equipment damage are costly—often resulting from low-quality, ill-fitting spare parts that fail to meet the rigorous demands of high-pressure, high-vibration, and corrosive environments, or comply with API 16A, API 7K, and GB standards. Our comprehensive portfolio of BOP seals, gearbox parts, sensors, cooling system components, and general industrial spare parts (including RS11851.05.01.03, AG27500130, AH100101081600) is engineered to eliminate these risks, delivering OEM-level performance, durability, and direct compatibility. Every part is manufactured with premium materials, complies with global industry standards, and is tested to withstand the harshest on-site conditions—ensuring reliable operation, extended service life, and reduced maintenance costs. Whether you need BOP seals for well control, gearbox parts for power transmission, sensors for monitoring, or cooling system components for equipment protection, we offer a comprehensive, one-stop supply solution tailored to all your equipment needs. Our parts are designed to keep your operations running at peak efficiency, minimizing downtime and maximizing productivity—with clear technical guidance available to verify compatibility and support your procurement process. Choose our precision-engineered spare parts for reliable, direct-fit replacements that you can trust to keep your drilling and industrial operations safe, continuous, and efficient.

 

contact us 

Emeil: [email protected]   whatsapp: +86 15275658619

Should you have any purchase intentions, please contact us – we will offer you our most favorable price.


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