Q-251 BUNA 70 Q RING

QH70251 is an AS568-251 black Buna-N (Nitrile) 70 Shore A quad profile Quad-Ring supplied with an inside diameter of 5.109 in (129.77 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.387 in (136.83 mm). In service, this quad-ring resists spiral failure in reciprocating service thanks to its multi-lobe geometry.

Buna-N (Nitrile) is specified here for most widely specified general-purpose sealing elastomer, reliable performance in both static and dynamic service. The compound resists greases and lubricants, water, and hydraulic fluids. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Verify compatibility before use with strong acids or ozone and direct sunlight.

Common environments for this compound include hydraulic and pneumatic systems, general industrial maintenance, and construction equipment.

QH70251 ships individually. Unit weight is approximately 5.17 g. Check the compound against your process media, pressure and temperature before committing to a design. 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.