Q-149 FLUOROELASTOMER 75 Q RING

The QV70149 is an AS568-149 black Viton® (FKM) 75 Shore A Quad-Ring built to an inside diameter of 2.8 in (71.12 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 3.006 in (76.35 mm). This quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

Viton® (FKM) is specified here for excellent resistance to compression set and permeation, industry benchmark where nitrile reaches its thermal limit. It resists petroleum oils and fuels, engine and transmission fluids, and aromatic hydrocarbons. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). The profile itself contributes two sealing bands per contact face rather than one and a parting line located away from the sealing surface.

It sees regular use in automotive fuel systems, chemical processing, and semiconductor equipment.

This item is sold individually under part number QV70149. Unit weight is approximately 2.5341 g and nominal inside diameter is listed as 2 13/16 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.