Afa Industries AFA Industries Seal O-Ring 8M5661 Part No: 8M5661

The AFA Industries 8M5661 O‑Ring Seal is engineered to meet or exceed Cat OEM specifications for part 8M‑5661. Sized at 47.22 mm ID with a 3.53 mm cross-section (Dash‑24), this VMQ silicone ring (Shore 70A) delivers long-term resilience in engine oil, coolant, or moderate heat environments. It is commonly installed as a static seal at injector tube interfaces or specialized cylinder block fittings on Cat® engines. With a packaged weight of approximately 0.01 lb and compact dimensions (~3.5 × 6 × 0.08 in), it’s well-suited to rebuild kits and on-site maintenance tasks. AFA's precision molding ensures OEM-level fit, minimal compression set, and consistent performance in high-cycle applications.