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 2925-01-206-5232
NSN 5835-01-495-0595
NSN 5998-01-459-8710
NSN 6610-01-269-1894
NSN 6145-01-482-0974
NSN 5935-01-121-4736
NSN 6240-01-415-9991
NSN 5895-01-399-0240
NSN 7035-01-468-4312
NSN 5945-01-388-7497
NSN 6620-00-816-9755
NSN 5975-00-443-5625