Ordered as S70MD237, this is an AS568-237 red Silicone 70 Shore A O-Ring built to an inside diameter of 3.359 in (85.32 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.637 in (92.38 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
The material holds up against ozone and UV exposure, dry heat, and weathering. That behavior comes from the compound itself: Silicone offers physiological inertness and low toxicity, flexibility that holds at very low temperatures. Continuous operating temperature is published at -80°F (-62.2°C) to 450°F (232.2°C). Applications involving steam above its rated range or concentrated acids call for a different compound.
This item is metal detectable for HACCP and foreign-body control programs. Maintenance and OEM teams specify it across medical devices, electronics and electrical enclosures, and pharmaceutical manufacturing.
This item is sold individually under part number S70MD237. Nominal inside diameter is listed as 3 3/8 inch. Review your operating media and conditions against this specification before installation.
description -237 RED SILICONE 70D O-RING
uf_description2 METAL DETECTABLE, 0.139" (3.53MM) CS X 3.359" (85.32MM) ID
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 3.359 inch (85.32 mm)
Actual_OD 3.637 inch (92.38 mm)
ProductCode Description O-Rings - FDA / Metal Detectable