Afa Industries AFA Industries Seal O-Ring 2M9780 Part No: 2M9780
$0.39
The AFA Industries 2M9780 is a direct replacement for the Caterpillar seal O‑ring specified under part number 2M‑9780. It measures 19.12 mm inside diameter with 2.46 mm cross-section (equivalent to SAE dash‑128 / AS568A‑128). Made from high-quality nitrile (NBR) elastomer approximately Shore 90A, it offers oil, fuel, and heat resistance for sealing precision in static joints such as injector sleeves or oil line fittings.
Specifications
The AFA Industries 2M9780 O‑Ring Seal is an aftermarket equivalent engineered to Cat OEM part 2M‑9780, designed for injector, oil‑line, or static joint sealing on Caterpillar diesel engines. It meets AS568A‑128 standard with dimensions of 19.12 mm (0.755″) ID × 2.46 mm (0.097″) cross-section. The O‑ring is molded from high-performance nitrile rubber (NBR), suitable for contact with diesel fuel, engine oil, hydraulic fluids, and light engine heat. Lightweight (~0.01 lb) and compliant to Cat tolerances, it ensures leak-free assembly under static seals. Frequently stocked by parts distributors like IndustrialStop and The O‑Ring Store as a Cat alternative fit. Ideal for OEM service and heavy-duty component rebuilds.
Weight
0.1
Compatibility
Alternative Part Numbers
- AFA 2M9780
- Caterpillar 2M‑9780
- Interstate‑McBee M‑2M9780
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