-139 RED SILICONE 70D O-RING

Part number S70MD139 is an AS568-139 red Silicone 70 Shore A O-Ring supplied with 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). An o-ring compresses into its gland to block fluid or gas migration across a joint.

This material stands up to ozone and UV exposure, dry heat, and many oxidizing chemicals. That behavior comes from the compound itself: Silicone is specified for flexibility that holds at very low temperatures and very good compression set resistance across its range. Rated temperature range runs from -80°F (-62.2°C) to 450°F (232.2°C) in continuous service.

This item is metal detectable for HACCP and foreign-body control programs. Typical settings include electronics and electrical enclosures, medical devices, and ovens and heated equipment.

S70MD139 ships individually. Nominal inside diameter is listed as 2 3/16 inch. Review your operating media and conditions against this specification before installation.