.275" C/S (1/4" NOMINAL) (6.99 MM)

This o-ring cord stock is supplied in black Buna-N (Nitrile) 70 Shore A built to a cross section of 0.275 in (6.99 mm), catalogued under part number 0284275. It provides continuous extruded stock for building one-off or oversized rings.

As a material, Buna-N (Nitrile) is widely chosen for low compression set under sustained load and an economical choice for high-volume maintenance programs. This material stands up to petroleum-based oils, hydraulic fluids, and many alcohols. Applications involving ozone and direct sunlight or strong acids call for a different compound.

Common environments for this compound include construction equipment, general industrial maintenance, and hydraulic and pneumatic systems.

Reference part number 0284275 when ordering; the item is sold by the foot. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.