Ordered as S70MD471, this is an AS568-471 red Silicone 70 Shore A O-Ring with an inside diameter of 21.955 in (557.66 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 22.505 in (571.63 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
As a material, Silicone is specified for very good compression set resistance across its range, physiological inertness and low toxicity. It resists extreme heat and cold, dry heat, and many oxidizing chemicals. Service temperature is rated from -80°F (-62.2°C) through 450°F (232.2°C). Applications involving steam above its rated range or hydrocarbon fuels and oils call for a different compound.
The compound is metal detectable for HACCP and foreign-body control programs. You will find this material specified across food and beverage processing, pharmaceutical manufacturing, and sanitary process lines.
This item is sold individually under part number S70MD471. Nominal inside diameter is listed as 22 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 -471 RED SILICONE 70D O-RING
uf_description2 METAL DETECTABLE, 0.275" (6.99MM) CS X 21.955" (557.66MM) ID
Actual_CS 0.275 inch (6.99 mm)
Actual_ID 21.955 inch (557.66 mm)
Actual_OD 22.505 inch (571.63 mm)
ProductCode Description O-Rings - FDA / Metal Detectable