.500" C/S (1/2") (12.70 MM)

This o-ring cord stock is supplied in black Buna-N (Nitrile) 90 Shore A built to a cross section of 0.5 in (12.7 mm), catalogued under part number 0284H500. It eliminates long lead times on large-diameter custom rings.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, low compression set under sustained load. The material holds up against greases and lubricants, petroleum-based oils, and water. It is not the right choice where ketones or automotive brake fluid are present.

Common environments for this compound include automotive, agricultural equipment, and construction equipment.

Reference part number 0284H500 when ordering; the item is sold by the foot. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.