Q-038 BUNA 70 Q RING

QH70038 is an AS568-038 black Buna-N (Nitrile) 70 Shore A Quad-Ring supplied with an inside diameter of 2.614 in (66.4 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.754 in (69.95 mm). In service, this quad-ring provides a dual sealing band on each contact face for improved reliability.

As a material, Buna-N (Nitrile) delivers an economical choice for high-volume maintenance programs and the most widely specified general-purpose sealing elastomer. The compound resists petroleum-based oils, many alcohols, and water. The material carries a published service range of -40°F (-40°C) to 250°F (121.1°C). Applications involving automotive brake fluid or ozone and direct sunlight call for a different compound. The profile itself contributes resistance to the spiral twisting that defeats round-section rings and two sealing bands per contact face rather than one.

Common environments for this compound include construction equipment, agricultural equipment, and automotive.

Order part number QH70038, sold individually. Unit weight is approximately 0.6647 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.