-421 RED SILICONE 70D O-RING

This o-ring is supplied in AS568-421 red Silicone 70 Shore A measuring an inside diameter of 3.975 in (100.97 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 4.525 in (114.94 mm), catalogued under part number S70421. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.

It resists many oxidizing chemicals, ozone and UV exposure, and extreme heat and cold. That behavior comes from the compound itself: Silicone is widely chosen for physiological inertness and low toxicity, flexibility that holds at very low temperatures. The material carries a published service range of -80°F (-62.2°C) to 450°F (232.2°C).

It sees regular use in ovens and heated equipment, sanitary process lines, and pharmaceutical manufacturing.

Stocked as S70421 and sold individually. Unit weight is approximately 18.241 g. 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.