-109 RED SILICONE 70D FDA O-RING

S70FDA109 is an AS568-109 red Silicone 70 Shore A O-Ring supplied with an inside diameter of 0.299 in (7.59 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.505 in (12.83 mm). In service, this o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists ozone and UV exposure, dry heat, and weathering. That behavior comes from the compound itself: Silicone offers very good compression set resistance across its range and flexibility that holds at very low temperatures. Continuous operating temperature is published at -80°F (-62.2°C) to 450°F (232.2°C). Exposure to hydrocarbon fuels and oils or abrasive dynamic service will shorten service life.

This item meets FDA requirements for food contact, is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across pharmaceutical manufacturing, medical devices, and ovens and heated equipment.

Reference part number S70FDA109 when ordering; the item is sold individually. Unit weight is approximately 0.25 g and nominal inside diameter is listed as 5/16 inch. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.