-278 RED SILICONE 70D FDA O-RING

Ordered as S70FDA278, this is an AS568-278 red Silicone 70 Shore A O-Ring with an inside diameter of 11.984 in (304.39 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 12.262 in (311.45 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Silicone is specified for an exceptionally wide service temperature range and very good compression set resistance across its range. It resists weathering, extreme heat and cold, and dry heat. The material carries a published service range of -80°F (-62.2°C) to 450°F (232.2°C). It is not the right choice where abrasive dynamic service or concentrated acids are present.

This o-ring meets FDA requirements for food contact under 21 CFR 177.2600. Maintenance and OEM teams specify it across pharmaceutical manufacturing, medical devices, and sanitary process lines.

Reference part number S70FDA278 when ordering; the item is sold individually. Unit weight is approximately 13.274 g. Check the compound against your process media, pressure and temperature before committing to a design.