Q-323 BUNA 70 Q RING

Ordered as QH70323, this is an AS568-323 black Buna-N (Nitrile) 70 Shore A Quad-Ring with an inside diameter of 1.287 in (32.69 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.707 in (43.36 mm). The quad-ring provides a dual sealing band on each contact face for improved reliability.

As a material, Buna-N (Nitrile) is widely chosen for strong abrasion and tear resistance, low compression set under sustained load. This material stands up to water, greases and lubricants, and petroleum-based oils. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to strong acids or ozone and direct sunlight will shorten service life. The profile itself contributes a parting line located away from the sealing surface and resistance to the spiral twisting that defeats round-section rings.

You will find this material specified across general industrial maintenance, fluid power, and construction equipment.

This item is sold individually under part number QH70323. Unit weight is approximately 3.238 g and nominal inside diameter is listed as 1 5/16 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.