-443 BLACK BUNA 70D O-RING

Ordered as H70443, this is an AS568-443 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 7.475 in (189.87 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 8.025 in (203.84 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is specified for strong abrasion and tear resistance, reliable performance in both static and dynamic service. Expect good resistance to greases and lubricants, propane and butane, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C).

Maintenance and OEM teams specify it across automotive, agricultural equipment, and hydraulic and pneumatic systems.

Stocked as H70443 and sold individually. Unit weight is approximately 28.979 g and nominal inside diameter is listed as 7 1/2 inch. Review your operating media and conditions against this specification before installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.