Q-319 BUNA 70 Q RING

Ordered as QH70319, this is an AS568-319 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 1.037 in (26.34 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.457 in (37.01 mm). The quad-ring delivers lower friction and better sealing stability than a comparable round-section o-ring.

Buna-N (Nitrile) is specified for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. This material stands up to propane and butane, greases and lubricants, and many alcohols. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). The profile itself contributes resistance to the spiral twisting that defeats round-section rings and lower compressive load required to achieve a seal.

Maintenance and OEM teams specify it across hydraulic and pneumatic systems, construction equipment, and fluid power.

Reference part number QH70319 when ordering; the item is sold individually. Unit weight is approximately 2.7263 g. Application requirements vary, so validate compatibility with your process conditions prior to installation.