-368 RED SILICONE 70D FDA O-RING

APG stocks the S70FDA368, an AS568-368 red Silicone 70 Shore A O-Ring with an inside diameter of 7.725 in (196.22 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 8.145 in (206.88 mm). An o-ring remains the most cost-effective sealing element available for pressurized assemblies.

The material holds up against weathering, many oxidizing chemicals, and dry heat. That behavior comes from the compound itself: Silicone is widely chosen for very good compression set resistance across its range and flexibility that holds at very low temperatures. Rated temperature range runs from -80°F (-62.2°C) to 450°F (232.2°C) in continuous service. It should not be specified for service in hydrocarbon fuels and oils or concentrated acids.

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

Stocked as S70FDA368 and sold individually. Unit weight is approximately 19.65 g and nominal inside diameter is listed as 7 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. 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.