-391 RED SILICONE 70D FDA O-RING

Ordered as S70FDA391, this is an AS568-391 red Silicone 70 Shore A O-Ring with an inside diameter of 21.953 in (557.61 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 22.373 in (568.27 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

Silicone delivers an exceptionally wide service temperature range and very good compression set resistance across its range. The compound resists many oxidizing chemicals, dry heat, and ozone and UV exposure. Service temperature is rated from -80°F (-62.2°C) through 450°F (232.2°C). It should not be specified for service in concentrated acids or abrasive dynamic service.

The compound meets FDA requirements for food contact under 21 CFR 177.2600. It sees regular use in pharmaceutical manufacturing, medical devices, and electronics and electrical enclosures.

S70FDA391 ships individually. Unit weight is approximately 57.36 g and nominal inside diameter is listed as 22 inch. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.