Q-160 BUNA 70 Q RING

This quad-ring is supplied in AS568-160 black Buna-N (Nitrile) 70 Shore A quad profile supplied with an inside diameter of 5.237 in (133.02 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 5.443 in (138.25 mm), catalogued under part number QH70160. It seats in a standard o-ring gland while offering improved dynamic performance.

Expect good resistance to propane and butane, many alcohols, and petroleum-based oils. That behavior comes from the compound itself: Buna-N (Nitrile) is widely chosen for the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where strong acids or ozone and direct sunlight are present.

Common environments for this compound include construction equipment, automotive, and general industrial maintenance.

Reference part number QH70160 when ordering; the item is sold individually. Unit weight is approximately 3.1 g and nominal inside diameter is listed as 5 1/4 inch. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.