235-3546 O-ring seal for CAT engines spare part

235-3546 O-ring seal for CAT engines spare part Featured Image
  • 235-3546 O-ring seal for CAT engines spare part
  • 235-3546 O-ring seal for CAT engines spare part

Short Description:

Large-size FKM O-ring for Caterpillar 3508/3512/3516 heavy diesel engine, for high-temperature fuel and lube oil sealing, resists oil corrosion and temperature fluctuation, prevents fluid leakage and stabilizes engine oil circuit.

Product Detail

Product Tags

description

This O-ring is molded from FKM fluoroelastomer at 75A hardness, resistant to diesel, lube oil and biodiesel, with excellent high-temperature aging resistance. It is designed for static sealing on cylinder head, fuel housing and oil chamber of large engine under cyclic temperature and oil pressure fluctuation. Thermal hardening, extrusion tear, swelling damage and poor rebound will trigger fuel and lube leakage, high oil consumption and unstable engine operation, with fire hazard.

Part No.:235-3546
Type: O-ring seal
Material: FKM fluoroelastomer, Shore A75
Inner Diameter:234.54 mm
Cross-section Diameter:3.53 mm
SAE Size: AS568 -271
Color: Brown
Compatible Fluid: Diesel, biodiesel, engine oil, lubricating oil
Not for: Glycol coolant, fresh water
Working Condition: High temperature and fluctuating oil pressure for engine fuel and lube circuit
Matching System: Engine fuel and lubrication sealing assembly

Application Scenarios

Fits Caterpillar 3508, 3508B, 3512, 3512B, 3512C, 3516B, 3524B high-power diesel engines, for overhaul of sealing positions on fuel housing, oil chamber and valve cover.

FAQ 

Q：Can darkened FKM O-ring without crack be reused?
A：Darkening means high-temperature oxidation and elasticity loss, leakage risk exists, reuse is not recommended.

Q：Can this FKM ring be used for coolant circuit?
A：No. FKM is not suitable for long-term immersion in glycol coolant.

Q：What will happen if coolant is used as lubricant during installation?
A：Mismatched lubricant leads to poor sealing and slow oil leakage after temperature rise.

Q：Why does it still leak after installing new O-ring with flat mating face?
A：Check groove wear, housing distortion or shear damage during installation.

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