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 6645-00-406-2564
NSN 5960-01-539-1956
NSN 6150-00-478-3874
NSN 6650-01-474-8459
NSN 4140-01-218-4999
NSN 5925-00-482-8704
NSN 6320-01-021-6633
NSN 6645-00-420-5072
NSN 7035-01-567-8088
NSN 5910-00-825-6561
NSN 6685-00-167-3801
NSN 6150-01-306-7408