-142 BLACK BUNA 70D O-RING

Part number H70142 is an AS568-142 black Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 2.362 in (59.99 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.568 in (65.23 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The material holds up against many alcohols, propane and butane, and hydraulic fluids. That behavior comes from the compound itself: Buna-N (Nitrile) is known for an economical choice for high-volume maintenance programs and low compression set under sustained load. Rated temperature range runs from -40°F (-40°C) to 250°F (121.1°C) in continuous service.

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

H70142 ships individually. Unit weight is approximately 0.0013 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.