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 5930-01-466-5402
NSN 4140-01-557-5790
NSN 6610-01-061-8466
NSN 6220-00-454-1132
NSN 5915-01-550-4839
NSN 5905-00-460-1203
NSN 5910-01-409-9230
NSN 6645-01-363-5944
NSN 5996-00-123-4826
NSN 6130-01-241-5880
NSN 5905-00-902-7965
NSN 6135-00-269-5843