-430 BLACK BUNA 90D O-RING

This o-ring is supplied in AS568-430 black Buna-N (Nitrile) 90 Shore A built to an inside diameter of 5.1 in (129.54 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.65 in (143.51 mm), catalogued under part number H90430. It delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) is widely chosen for reliable performance in both static and dynamic service, the most widely specified general-purpose sealing elastomer. Expect good resistance to petroleum-based oils, water, and propane and butane. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with ketones or automotive brake fluid.

Maintenance and OEM teams specify it across construction equipment, fluid power, and agricultural equipment.

Reference part number H90430 when ordering; the item is sold individually. Unit weight is approximately 21.2 g. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.