This o-ring is supplied in AS568-391 black Buna-N (Nitrile) 70 Shore A with an inside diameter of 21.953 in (557.61 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 22.373 in (568.27 mm), catalogued under part number H70MD391. It delivers dependable bidirectional sealing in a compact groove envelope.
Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. The material holds up against many alcohols, petroleum-based oils, and hydraulic fluids. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C).
The compound is metal detectable for HACCP and foreign-body control programs. You will find this material specified across agricultural equipment, automotive, and general industrial maintenance.
H70MD391 ships individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description -391 BLACK BUNA 70D O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 21.953 inch (557.61 mm)
Actual Outside Diameter 22.373 inch (568.27 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable