-428 RED SILICONE 70D FDA O-RING

This o-ring is supplied in AS568-428 red Silicone 70 Shore A with an inside diameter of 4.85 in (123.19 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.4 in (137.16 mm), catalogued under part number S70FDA428. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against weathering, extreme heat and cold, and dry heat. That behavior comes from the compound itself: Silicone is widely chosen for an exceptionally wide service temperature range and excellent electrical insulating properties. Continuous operating temperature is published at -80°F (-62.2°C) to 450°F (232.2°C).

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

Stocked as S70FDA428 and sold individually. Unit weight is approximately 21.14 g and nominal inside diameter is listed as 4 7/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.