This o-ring is supplied in AS568-438 red Silicone 70 Shore A with an inside diameter of 6.225 in (158.12 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.775 in (172.09 mm), catalogued under part number S70438. It delivers dependable bidirectional sealing in a compact groove envelope.
Silicone is specified here for exceptionally wide service temperature range and very good compression set resistance across its range. It resists dry heat, ozone and UV exposure, and extreme heat and cold. Continuous operating temperature is published at -80°F (-62.2°C) to 450°F (232.2°C). It should not be specified for service in steam above its rated range or abrasive dynamic service.
Maintenance and OEM teams specify it across medical devices, pharmaceutical manufacturing, and sanitary process lines.
Order part number S70438, sold individually. Unit weight is approximately 27.902 g and nominal inside diameter is listed as 6 1/4 inch. Check the compound against your process media, pressure and temperature before committing to a design.
Description -438 RED SILICONE 70D O-RING
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 6.225 inch (158.12 mm)
Actual Outside Diameter 6.775 inch (172.09 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity