This quad-ring is supplied in AS568-315 black Viton® (FKM) 75 Shore A quad profile built to an inside diameter of 0.787 in (19.99 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.207 in (30.66 mm), catalogued under part number VQ4315. It uses a four-lobed profile to create two sealing surfaces per side, reducing the squeeze needed to seal.
Viton® (FKM) is specified here for industry benchmark where nitrile reaches its thermal limit and long service life in hot, chemically aggressive environments. It resists petroleum oils and fuels, chlorinated solvents, and aggressive chemicals. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C).
It sees regular use in chemical processing, semiconductor equipment, and aerospace.
This item is sold individually under part number VQ4315. 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.
description *4315-514AD MINNESOTA RUBBER QUAD RING
Actual_ID 0.787 inch (19.99 mm)
Actual_OD 1.207 inch (30.66 mm)
Actual_CS 0.21 inch (5.33 mm)
ProductCode Description O-Rings - Square/Quad - Premium