-430 BLACK BUNA 70D O-RING

H70430 is an AS568-430 black Buna-N (Nitrile) 70 Shore A O-Ring measuring 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). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) delivers low compression set under sustained load, reliable performance in both static and dynamic service. It resists greases and lubricants, many alcohols, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving polar solvents or ozone and direct sunlight call for a different compound.

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

Order part number H70430, sold individually. Unit weight is approximately 20.2 g. As always, verify media compatibility and operating conditions against the requirements of your specific application.