568-337 FKM 75 SQUARE CUT RINGS

APG stocks the SV70337, an AS568-337 black Viton® (FKM) 70 Shore A square profile Quad-Ring built to an inside diameter of 2.975 in (75.57 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.395 in (86.23 mm). A quad-ring uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.

The material holds up against many acids, aggressive chemicals, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) delivers long service life in hot, chemically aggressive environments, excellent resistance to compression set and permeation. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Exposure to amines or low-molecular-weight organic acids will shorten service life.

Common environments for this compound include chemical processing, automotive fuel systems, and oil and gas.

Reference part number SV70337 when ordering; the item is sold individually. Nominal inside diameter is listed as 3 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.