A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5915-00-137-3006
NSN 6320-00-242-3300
NSN 6620-00-035-5813
NSN 5925-00-262-5651
NSN 7035-01-623-0334
NSN 5905-00-736-0426
NSN 6105-01-117-0615
NSN 6145-00-793-7816
NSN 6130-00-175-8066
NSN 5975-01-362-7311
NSN 5985-01-491-6882
NSN 5998-01-478-5371