Your cart is empty
Browse our catalog to find the parts you need.
These images are illustrative and may not match the product exactly. Always verify by part number — or confirm instantly with the assistant using a photo or VIN.
Caterpillar · Hardware & Fasteners
1142687
In stock · ships from Knoxville
This is a Caterpillar O-Ring seal, part number 1142687. It is a standard HNBR (Hydrogenated Nitrile) rubber O-ring used for static and dynamic sealing in Caterpillar engines and machinery.
Confirm the part fits before you buy. Applications and interchange numbers are researched and audited per part.
Verified fitment for 1 applications
Add your truck to see whether it's one of them
All confirmed applications for this part number.
Caterpillar
Caterpillar
Used in many Cat machine and engine joints; not for biodiesel applications. Verify exact groove dimensions and material compatibility for your specific equipment.
Part data verified against 5 catalog sources
Numbers this part supersedes or interchanges with. Showing 3 of 3.
Different year, make, or config? Get a confirmation against your truck in under a minute.
It provides a tight seal against oils, diesel fuels, engine coolants, and other fluids within its temperature range. You would replace it when the old O-ring is worn, cut, or leaking at a joint, preventing fluid loss or contamination.
Part Number: 1142687
O-RING
Vendor: STOWERS MACHINERY
Dealer: Post Onsite
Compatibility, alternatives, and more
