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 5910-01-615-7062
NSN 5960-01-485-7532
NSN 5996-00-155-6904
NSN 2925-00-791-8776
NSN 4140-00-175-6036
NSN 6685-01-363-8382
NSN 6240-01-496-9946
NSN 6135-01-503-1688
NSN 6240-01-123-0475
NSN 5996-01-350-4139
NSN 2925-00-961-2117
NSN 5905-00-708-0891