2S-4078 O-ring for CAT excavator spare part

2S-4078 O-ring for CAT excavator spare part Featured Image
  • 2S-4078 O-ring for CAT excavator spare part
  • 2S-4078 O-ring for CAT excavator spare part

Short Description:

FKM O-ring for Caterpillar excavators, loaders and engines, resistant to oil, fuel and high temperature, static seal for connectors, plugs and sensor bases, prevents medium leakage.

Product Detail

Product Tags

description

This O-ring is made of FKM fluoroelastomer, with good resistance to high temperature, fuel and hydraulic oil. It fills groove gap by elastic compression and works for high-temperature sealing points of engine and hydraulic system. Carbonization, cracking, swelling and extrusion damage will lead to oil leakage and pressure loss. Seal failure at high temperature brings safety risk and accelerates component wear.

Part No.:2S-4078
Type: O-ring seal
Material: FKM fluoroelastomer
Color: Black
Sealing Type: Static sealing
Compatible Medium: Hydraulic oil, diesel fuel, lubricating oil
Temperature Range: -20℃ ~ 200℃
Working Condition: High-temperature and medium-pressure environment for fuel and hydraulic system
Matching System: Engine, hydraulic valve, fuel pipeline assembly

Application Scenarios

Fits Caterpillar 320, 330, 345 excavators, 950, 966, 980 wheel loaders, 3400, C9, C13 engines, for overhaul of sensor base, hydraulic plug, fuel connector and valve block port.

FAQ 

Q：Can this FKM O-ring directly replace NBR O-ring of same size?
A：Check working condition first. FKM performs better at high temperature but worse at low temperature.

Q：Can slightly carbonized black O-ring be installed?
A：Not recommended. Carbonization causes elasticity loss and rapid leakage under heat and pressure.

Q：What happens if ordinary grease is used for FKM installation?
A：Incompatible grease erodes the material and leads to swelling and early failure.

Q：Will new O-ring stop leakage if the plug thread is stripped?
A：No. Loose thread causes continuous pressure loss, repair or replace the plug first.

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