-220 RED SILICONE 70D FDA O-RING

S70FDA220 is an AS568-220 red Silicone 70 Shore A O-Ring with an inside diameter of 1.359 in (34.52 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.637 in (41.58 mm). In service, this 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, physiological inertness and low toxicity. This material stands up to weathering, dry heat, and many oxidizing chemicals. Continuous operating temperature is published at -80°F (-62.2°C) to 450°F (232.2°C). Exposure to concentrated acids or abrasive dynamic service will shorten service life.

This o-ring meets FDA requirements for food contact under 21 CFR 177.2600. You will find this material specified across pharmaceutical manufacturing, medical devices, and sanitary process lines.

Stocked as S70FDA220 and sold individually. Unit weight is approximately 1.633 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.