Caterpillar 1J-9671 Seal

Caterpillar 1J-9671 Seal is a precisely sized nitrile O-ring (NBR, 90 Shore A) engineered for reliable sealing in Cat assemblies. The seal measures 1.83 mm cross‑section by 10.52 mm inside diameter, providing a compact, crush‑resistant fit for tight groove geometries. This 1J‑9671 O‑ring is specified to fit Caterpillar equipment and engines, including 3412 configurations and SR-series variants such as SR4, SR4B, SR4BHV, SR5, and SR500, as well as WEG installations. When replacing, ensure the groove and seating surface match the 1.83 × 10.52 mm specification and that the material is compatible with the fluids in the system. Cataloged within Caterpillar’s seals and O‑rings lineup, the 1J‑9671 serves as a straightforward, single‑part sealing solution for compatible interfaces, helping restore leak‑free performance without introducing additional components.