Ordered as S70MD157, this is an AS568-157 red Silicone 70 Shore A O-Ring built to an inside diameter of 4.487 in (113.97 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.693 in (119.2 mm). The o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
As a material, Silicone offers excellent electrical insulating properties and an exceptionally wide service temperature range. It resists dry heat, weathering, and extreme heat and cold. The material carries a published service range of -80°F (-62.2°C) to 450°F (232.2°C).
The compound is metal detectable for HACCP and foreign-body control programs. Typical settings include pharmaceutical manufacturing, sanitary process lines, and ovens and heated equipment.
Order part number S70MD157, sold individually. Nominal inside diameter is listed as 4 1/2 inch. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Description -157 RED SILICONE 70D O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 4.487 inch (113.97 mm)
Actual Outside Diameter 4.693 inch (119.2 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable