2S-4078 O-RING for CATERPILLAR D275A D375A D65E WA800 WA900 HD465 HD785 HD1500 HM400

37.47 mm Inside Diameter O-Ring for CAT/Komatsu Heavy Equipment (Part No. 2S-4078)

Premium material (NBR/PTFE specified) with 90A hardness for superior oil, temperature, and wear resistance

Features excellent elasticity and compression set resistance to effectively prevent fluid leakage

Fully aligns with CAT OEM specifications for a seamless fit in hydraulic and fluid systems

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ParameterDescription
Part Number2S-4078 O-Ring
Compatible ModelsCAT D275A, D375A, D65E Bulldozers; Komatsu WA800, WA900 Loaders; HD465, HD785, HD1500, HM400 Dump Trucks
Seal TypeStandard O-Ring Seal
MaterialNBR (Nitrile Rubber) and Polytetrafluoroethylene (PTFE)
Material Hardness90A
Inner Diameter (ID)37.47 mm (1.475 in)
Cross Section Diameter0.118 in (5.33 mm approx. from other data)
Weight0.01KG
PrecisionFully aligns with CAT OEM specifications
PerformanceSuperior elasticity, compression set resistance, high/low temperature tolerant
PackagingCartons
Lead TimeIn-stock: 7 days; Production: Approximately 90 days
Warranty6 months, includes technical support

Applications

  • Essential sealing element for hydraulic/fluid system interfaces across CAT and Komatsu heavy machinery.
  • Critical for D275A/D375A/D65E bulldozers in earthmoving and construction site leveling.
  • Ensures reliable sealing in the high-pressure systems of WA800/WA900 loaders and HD465/HD785/HD1500/HM400 dump trucks (mineral transportation).

Shipping Method

  • Air freight
  • Sea freight

Payment Method

  • We can accept Ruble payments via a VTB Bank account in Shanghai.
  • Other payment methods are available upon request.

Protect your fluid systems and minimize costly leaks in your heavy machinery fleet. Order the 2S-4078 O-Ring today for OEM-grade sealing and maximum durability!


FAQs

Q: Which machine models is this O-Ring compatible with?

A: It is compatible with a wide range of models, including CAT D-series dozers (D275A, D375A, D65E), Komatsu WA-series loaders (WA800, WA900, WA500, WA430), and HD/HM-series dump trucks (HD465, HD785, HD1500, HM400).

Q: What is the main material and hardness?

A: The primary materials are Nitrile Rubber (NBR) and PTFE, specified for high/low temperature and oil resistance, with a material hardness of 90A.

Q: What is the inner diameter of this O-Ring?

A: The inner diameter is 37.47 mm (1.475 inches).

Q: How long is the warranty?

A: We provide a 6-month warranty, along with technical support.

Q: What is the lead time for shipping?

A: In-stock items ship within 7 days; production orders take approximately 90 days.

Q: Can I pay in a currency other than Rubles?

A: Yes, in addition to Ruble payments via VTB Bank, other payment options are also available upon request.