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 6320-00-701-0437
NSN 6130-01-167-9371
NSN 6110-01-191-0127
NSN 6650-01-633-9147
NSN 6610-01-072-7922
NSN 5925-00-959-4983
NSN 5855-00-482-9876
NSN 5999-00-185-6032
NSN 5990-01-633-9503
NSN 6685-01-216-4146
NSN 5910-01-285-2470
NSN 6650-00-527-8822