Q-252 FLUOROELASTOMER 75 Q RING

The QV70252 is an AS568-252 black Viton® (FKM) 75 Shore A Quad-Ring measuring an inside diameter of 5.234 in (132.94 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.512 in (140 mm). This quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

The compound resists engine and transmission fluids, aromatic hydrocarbons, and petroleum oils and fuels. Viton® (FKM) is valued for long service life in hot, chemically aggressive environments and the industry benchmark where nitrile reaches its thermal limit. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Applications involving hot water and steam or low-molecular-weight organic acids call for a different compound. The profile itself contributes lower compressive load required to achieve a seal and two sealing bands per contact face rather than one.

It sees regular use in oil and gas, semiconductor equipment, and automotive fuel systems.

QV70252 ships individually. Unit weight is approximately 8.625 g and nominal inside diameter is listed as 5 1/4 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.