.139" C/S (1/8" NOMINAL) (3.53 MM)

This o-ring cord stock is supplied in black Aflas (TFE/P) 75 Shore A with a cross section of 0.139 in (3.53 mm), catalogued under part number 0281139. It supports field repair of oversized or non-standard sealing grooves without a special tooling charge.

The compound resists hot water, strong bases, and amines and corrosion inhibitors. That behavior comes from the compound itself: Aflas (TFE/P) is widely chosen for excellent electrical insulating properties and high-temperature steam capability that most fluoroelastomers cannot match. It should not be specified for service in some chlorinated solvents or low-temperature dynamic service.

You will find this material specified across oil and gas production, downhole tooling, and power generation.

Order part number 0281139, sold by the foot. Check the compound against your process media, pressure and temperature before committing to a design.