8.4MM CS X 249.5MM ID BLACK FKM 70D

APG stocks the V8.4X249.5, a black Viton® (FKM) 70 Shore A O-Ring supplied with an inside diameter of 249.5 mm (9.823 in), a cross section of 8.4 mm (0.331 in), and an outside diameter of 266.3 mm (10.48 in). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. The catalog record notes: Metric O-RING, JIS P250.

The compound resists aromatic hydrocarbons, engine and transmission fluids, and aggressive chemicals. Viton® (FKM) delivers the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Applications involving amines or low-molecular-weight organic acids call for a different compound.

Common environments for this compound include chemical processing, automotive fuel systems, and semiconductor equipment.

Stocked as V8.4X249.5 and sold individually. Unit weight is approximately 82.96 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.