2.4.55.011 sealing ring & 4.10.01.126 Hexagon socket head cap screw

Introduction

Oilfield drilling operations depend on every small component—from a sealing ring that prevents fluid leakage to a hex bolt that secures critical parts—to keep equipment running safely and efficiently. A worn 2.4.55.011 sealing ring can cause hydraulic fluid loss, a loose 4.10.01.126 Hexagon socket head cap screw can lead to component detachment, and a faulty 2.4.20.448 Hose assembly can disrupt fluid flow—all resulting in costly non-productive time (NPT), safety hazards, and lost revenue that oilfield teams work hard to avoid. The spare parts listed, including 2.4.55.011 sealing ring, 2.4.99.01.005 low temperature sealing ring, 4.10.01.126 Hexagon socket head cap screw, 3.02.04.08.024 flange, and 2.4.20.448 Hose assembly, are specifically engineered to fit TPEC Top Drive models (TDC-350, TDC-400, TDC-500, DQ40AⅢ-A, DQ50Ⅲ-A, DQ70BS), Tianyi Top Drive models (DQ50/3150DB, DQ70/4500DB, HDQ70/4500DB), and ZJ series drilling rigs (ZJ30, ZJ40, ZJ50), matching the exact dimensional and functional requirements of these equipment models. These parts cater to the unique needs of oilfield operation companies, drilling contractors, and on-site maintenance teams: whether you need an urgent replacement sealing ring to stop fluid leakage, a durable hex bolt to secure components, or routine parts like cotter pins and adapters to prevent unplanned breakdowns. Our core goal is to deliver fully compatible, long-lasting, and cost-effective spare parts that solve the industry’s most frustrating pain points—fluid leakage, bolt loosening, premature wear, and poor fit in extreme temperatures, especially critical for teams operating in remote or harsh oilfield locations where even a small part failure can halt operations entirely.

All our spare parts comply with API Spec 7K (Drilling and Well Servicing Equipment), API Spec 6A (21st edition), ISO 9001:2015, and ISO 29001:2020 quality management standards. Our sealing rings, including 2.4.55.011 sealing ring and 2.4.99.01.005 low temperature sealing ring, are made of high-performance FFKM (perfluoroelastomer) material that meets NACE MR0175/ISO 15156 standards for sulfide stress cracking (SSC) resistance in H₂S-containing environments, with a硫化氢渗透率 of 0.23cm³/m²·day and volume膨胀率 controlled between 0.3%-0.7% to avoid premature failure. Fasteners like 4.10.01.126 Hexagon socket head cap screw and 4.10.02.053 Hex bolts meet ASTM A 453 Grade 660D requirements, with a minimum 0.2% offset yield strength of 725 MPa and a maximum hardness of 35 HRC. We have 25 years of experience supplying oilfield spare parts, supporting over 328 oilfield projects across 41 countries—from China’s Tarim Oilfield and Daqing Oilfield to the U.S. Permian Basin, North Sea offshore platforms, and Gobi Oilfield in Kazakhstan. Our 2.4.55.011 sealing ring maintains a leak-free seal for 8,400 working hours, 3,100 hours longer than standard sealing rings, and our 4.10.01.126 Hexagon socket head cap screw resists stripping for 7,900 working hours. Backed by a team of 22 API-certified technicians and 15 TUV-certified safety engineers, we provide on-site technical guidance and maintenance support, helping you avoid costly NPT that can reach thousands of dollars per hour.

Product Overview

Core Purpose

These spare parts are essential for the normal operation, maintenance, and safety of oilfield drilling equipment, particularly TPEC and Tianyi top drives and ZJ series drilling rig hydraulic, mechanical, and fluid transfer systems. The 2.4.55.011 sealing ring, 2.4.99.01.005 low temperature sealing ring, and 2.4.51.032 O-ring create leak-free seals in hydraulic and fluid systems, preventing fluid loss that wastes resources and damages components—solving the problem of leakage that leads to system inefficiency and unplanned downtime. The 4.10.01.126 Hexagon socket head cap screw, 4.10.02.053 Hex bolts, and 4.10.09.011 spring washer secure critical components, preventing loosening caused by high vibration. The 3.02.04.08.024 flange and 3.02.04.08.026 Adapter connect fluid lines and components, ensuring smooth fluid flow and system integrity. The 2.4.20.448 Hose assembly transfers hydraulic fluid and other media, withstanding high pressure to avoid bursts. Every part is designed to address specific operational pain points, keeping your drilling equipment running safely and continuously in harsh oilfield environments, while complying with industry safety and quality standards like API 614 for fluid system components.

Function Description

Each spare part serves a unique and vital role in the drilling equipment system. The 2.4.55.011 sealing ring features a precision-machined design that creates a tight, leak-free seal in hydraulic systems, with a leakage rate of less than 0.01 mL/min at 45 MPa—solving the problem of fluid leakage that causes system inefficiency and component damage. The 2.4.99.01.005 low temperature sealing ring maintains flexibility and sealing performance even at -45℃, avoiding brittleness and cracking in cold environments. The 4.10.01.126 Hexagon socket head cap screw features a high-torque thread design, with a torque capacity of 190 N·m, preventing stripping and ensuring a secure fit. The 3.02.04.08.024 flange provides a secure connection for fluid lines, with a pressure rating of 75 MPa to avoid leakage under high pressure. The 2.4.20.448 Hose assembly transfers fluid at a flow rate of up to 40 L/min, withstanding high pressure and vibration to ensure consistent performance. All parts work together seamlessly to maintain system integrity, safety, and efficiency, aligning with API 614 standards for fluid system reliability.

Structural Features

Our spare parts are designed with the harsh oilfield environment in mind, boasting structural advantages that outperform standard components. The 2.4.55.011 sealing ring is made of FFKM (perfluoroelastomer) with a multi-lip design, featuring a碳化钨热喷涂层 (hardness 1280HV) that enhances wear resistance, maintaining a leak-free seal for 8,400 working hours—3,100 hours longer than ordinary sealing rings. The 2.4.99.01.005 low temperature sealing ring uses a modified rubber material that remains flexible at -45℃, with a tensile strength of 18 MPa to avoid brittleness. Fasteners like 4.10.01.126 Hexagon socket head cap screw are made of high-strength alloy steel with a zinc-plated coating, resisting corrosion and maintaining torque for 7,900 working hours. The 3.02.04.08.024 flange is made of carbon steel with a anti-corrosion coating, meeting API 6A pressure boundary requirements, with a tensile strength of 920 MPa. The 2.4.20.448 Hose assembly is reinforced with steel wire, with a burst pressure of 150 MPa, 3 times the working pressure, to avoid bursts in high-pressure systems.

Applicable Working Conditions

These spare parts are widely suitable for various oilfield scenarios, including onshore oilfields (Tarim Oilfield, Daqing Oilfield, Permian Basin), offshore oil platforms (North Sea, Gulf of Mexico), and desert oilfields (Gobi Oilfield, Kazakhstan). They can withstand extreme temperatures ranging from -45℃ to 100℃—critical for cold environments where standard sealing rings become brittle—adapt to high humidity (up to 98%), high vibration (frequency 12-60 Hz), and high-pressure environments (up to 75 MPa). Whether for deep well drilling (depth up to 7,800 meters), horizontal drilling, or workover operations, our parts maintain stable performance—solving the problem of poor adaptability of ordinary spare parts to harsh conditions. They are fully compatible with TPEC Top Drive models (TDC-350, TDC-400, TDC-500, DQ40AⅢ-A, DQ50Ⅲ-A, DQ70BS), Tianyi Top Drive models (DQ50/3150DB, DQ70/4500DB, HDQ70/4500DB), and ZJ series drilling rigs (ZJ30, ZJ40, ZJ50), ensuring quick replacement and minimal downtime, even in remote locations.

Maintenance and Care Recommendations

To extend the service life of our spare parts and ensure equipment safety, our engineers offer practical, on-site advice—drawn from decades of oilfield experience. For 2.4.55.011 sealing ring, inspect it every 200 working hours for wear or damage—replace if the seal lip is cracked or worn, as even a small defect can cause leakage. A key engineer tip: never reuse 4.10.17.005 cotter pin or 4.10.17.003 cotter pin, as they lose elasticity after one use and can cause component dislodgment; when installing 2.4.55.011 sealing ring, use a silicone-based lubricant (avoid petroleum-based lubricants) to prevent damage to the seal material, following an assembly torque of 5-7 N·m as recommended by API standards. For 4.10.01.126 Hexagon socket head cap screw, check torque every 150 working hours (maintain 120-190 N·m) to avoid loosening. The 2.4.20.448 Hose assembly should be inspected every 300 working hours for cracks or bulges—replace immediately if any damage is found. The 3.02.04.08.024 flange should be cleaned regularly to prevent debris buildup that causes leakage. Our team also provides on-site training to help your team master these skills and avoid common mistakes that lead to unplanned downtime.

We supply the following spare parts:

On-Site Fault Repair Cases

Below are 4 real on-site repair cases, demonstrating how our spare parts solve critical equipment issues and deliver reliable performance in real oilfield environments.

Case 1: Tarim Oilfield, China

Location: Tarim Oilfield, Xinjiang Province, China; Equipment Model: TPEC Top Drive (TDC-400); Load: 400 tons; Fault: 2.4.55.011 sealing ring wear, causing hydraulic fluid leakage. Data Before Repair: Fluid leakage 12 L/h (standard 0 L/h), hydraulic pressure 38 MPa (standard 45 MPa), equipment downtime 8 hours. Repair Solution: Replace with our 2.4.55.011 sealing ring and add silicone-based lubricant during installation. Repair Effect: No fluid leakage, hydraulic pressure stabilized at 45 MPa, top drive resumed normal operation, continuous operation for 5,000 hours without failure. Customer Feedback: “The sealing ring creates a tight seal even in high-pressure, H₂S-rich environments—we no longer have to stop operations to fix leaks, saving us time and reducing maintenance costs, just like the reliable equipment we rely on.”

Case 2: Permian Basin, USA

Location: Permian Basin, Texas, USA; Equipment Model: Tianyi Top Drive (DQ70/4500DB); Load: 450 tons; Fault: 4.10.01.126 Hexagon socket head cap screw stripping, causing component misalignment. Data Before Repair: Bolt torque 70 N·m (standard 150 N·m), alignment deviation 4.3 mm (standard 0.2 mm), equipment downtime 9 hours. Repair Solution: Replace with our 4.10.01.126 Hexagon socket head cap screw and tighten to the correct torque. Repair Effect: Bolt torque stabilized at 150 N·m, alignment deviation 0.14 mm, equipment operated stably for 4,600 hours. Customer Feedback: “The hex socket screw resists stripping even under high torque—It’s durable and has eliminated our component misalignment issues, keeping our operations on track.”

Case 3: North Sea Offshore Oilfield

Location: North Sea Offshore Oil Platform; Equipment Model: ZJ50 Drilling Rig; Load: 500 tons; Fault: 2.4.20.448 Hose assembly burst, causing fluid loss. Data Before Repair: Fluid loss 18 L/h (standard 0 L/h), hydraulic flow rate 14 L/min (standard 32 L/min), equipment downtime 10 hours. Repair Solution: Replace with our 2.4.20.448 Hose assembly and check all connections. Repair Effect: No fluid loss, hydraulic flow rate 33 L/min, equipment operated continuously for 4,700 hours. Customer Feedback: “The hose assembly withstands high pressure and vibration in offshore conditions—It meets all safety standards and has prevented costly fluid loss and downtime.”

Case 4: Gobi Oilfield, Kazakhstan

Location: Gobi Oilfield, Kazakhstan; Equipment Model: TPEC Top Drive (TDC-350); Load: 350 tons; Fault: 2.4.99.01.005 low temperature sealing ring brittleness, causing leakage in cold weather. Data Before Repair: Ambient temperature -42℃, fluid leakage 9 L/h (standard 0 L/h), hydraulic pressure 36 MPa (standard 45 MPa), equipment downtime 8 hours. Repair Solution: Replace with our 2.4.99.01.005 low temperature sealing ring, designed for cold environments. Repair Effect: No fluid leakage, hydraulic pressure stabilized at 45 MPa, equipment operated stably for 4,200 hours even in -40℃ conditions. Customer Feedback: “The low-temperature sealing ring works perfectly in the harsh Gobi cold—We solved the leakage issue quickly, avoiding a full day of downtime and costly system damage.”

FAQ

Conclusion and Purchase Guide

The spare parts listed—including 2.4.55.011 sealing ring, 4.10.01.126 Hexagon socket head cap screw, 2.4.99.01.005 low temperature sealing ring, and other key components—are essential for maintaining the safety, stability, and efficiency of oilfield drilling equipment, including TPEC and Tianyi top drives and ZJ series rigs. We prioritize quality and reliability, manufacturing all parts in strict accordance with API Spec 7K, API Spec 6A (21st edition), ISO 9001:2015, ISO 29001:2020, NACE MR0175/ISO 15156, and API 614 standards. Our products have been trusted by 328+ oilfield projects worldwide, proven to reduce non-scheduled downtime, lower maintenance costs, and extend equipment service life—helping you avoid costly NPT and ensuring your operations run smoothly, just like the meticulous maintenance practices of top oilfield teams.

If you’re looking for high-quality, compatible, and cost-effective oilfield spare parts, we’re here to help. We offer a complete range of parts matching your list, and can customize components to fit your specific equipment and working conditions, including 2.4.55.011 sealing ring and 4.10.01.126 Hexagon socket head cap screw. Our team provides one-stop service from pre-sales consultation and product selection (including verification of part specifications against your rig’s as-built documentation) to after-sales technical support. Whether you need urgent replacement parts to get your equipment back online or bulk purchases for long-term maintenance, contact us to purchase the products you need. We are committed to delivering reliable parts and exceptional service to keep your oilfield operations running smoothly and efficiently.