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 6130-01-081-9738
NSN 5999-01-627-8257
NSN 5910-01-315-4204
NSN 5960-01-382-8772
NSN 7035-01-222-1484
NSN 6620-01-591-4031
NSN 6320-00-270-8222
NSN 5905-00-791-9863
NSN 5985-01-534-9915
NSN 6240-01-381-5541
NSN 5960-01-222-4199
NSN 5835-01-023-8733