The S70243 is an AS568-243 red Silicone 70 Shore A O-Ring measuring an inside diameter of 4.109 in (104.37 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.387 in (111.43 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.
Silicone is specified here for flexibility that holds at very low temperatures and excellent electrical insulating properties. Expect good resistance to weathering, dry heat, and ozone and UV exposure. Continuous operating temperature is published at -80°F (-62.2°C) to 450°F (232.2°C). Exposure to abrasive dynamic service or steam above its rated range will shorten service life.
Maintenance and OEM teams specify it across pharmaceutical manufacturing, ovens and heated equipment, and medical devices.
Order part number S70243, sold individually. Unit weight is approximately 4.62 g. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -243 RED SILICONE 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 4.109 inch (104.37 mm)
Actual Outside Diameter 4.387 inch (111.43 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity