This o-ring is supplied in AS568-324 red Silicone 70 Shore A measuring an inside diameter of 1.35 in (34.29 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.77 in (44.96 mm), catalogued under part number S70FDA324. It remains the most cost-effective sealing element available for pressurized assemblies.
Expect good resistance to extreme heat and cold, dry heat, and ozone and UV exposure. That behavior comes from the compound itself: Silicone offers flexibility that holds at very low temperatures and very good compression set resistance across its range. The material carries a published service range of -80°F (-62.2°C) to 450°F (232.2°C). It should not be specified for service in hydrocarbon fuels and oils or concentrated acids.
The compound 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, ovens and heated equipment, and sanitary process lines.
S70FDA324 ships individually. Unit weight is approximately 3.995 g and nominal inside diameter is listed as 1 3/8 inch. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
description -324 RED SILICONE 70D FDA O-RING
uf_description2 COMPLIANT TO 21CFR SEC 177-2600, 0.210" (5.33MM) CS X 1.350" (34.29MM) ID
Actual_CS 0.21 inch (5.33 mm)
Actual_ID 1.35 inch (34.29 mm)
Actual_OD 1.77 inch (44.96 mm)
ProductCode Description O-Rings - FDA / Metal Detectable