-139 RED SILICONE 70D O-RING

This o-ring is supplied in AS568-139 red Silicone 70 Shore A measuring an inside diameter of 2.175 in (55.25 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 2.381 in (60.48 mm), catalogued under part number S70139. It compresses into its gland to block fluid or gas migration across a joint.

This material stands up to extreme heat and cold, weathering, and ozone and UV exposure. That behavior comes from the compound itself: Silicone is specified for physiological inertness and low toxicity, very good compression set resistance across its range. Continuous operating temperature is published at -80°F (-62.2°C) to 450°F (232.2°C). Exposure to hydrocarbon fuels and oils or concentrated acids will shorten service life.

Maintenance and OEM teams specify it across sanitary process lines, ovens and heated equipment, and pharmaceutical manufacturing.

S70139 ships individually. Unit weight is approximately 1.353 g and nominal inside diameter is listed as 2 3/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.