-249 BLACK BUNA 70D O-RING

Part number H70MD249 is an AS568-249 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 4.859 in (123.42 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.137 in (130.48 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

Expect good resistance to greases and lubricants, many alcohols, and water. Buna-N (Nitrile) is valued for an economical choice for high-volume maintenance programs, reliable performance in both static and dynamic service. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

The compound is metal detectable for HACCP and foreign-body control programs. It sees regular use in fluid power, general industrial maintenance, and agricultural equipment.

Stocked as H70MD249 and sold individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.