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 5920-01-517-9915
NSN 5999-01-534-7592
NSN 5905-01-241-9296
NSN 5999-01-463-0927
NSN 6130-01-222-2180
NSN 5925-00-584-7189
NSN 6145-01-240-0955
NSN 6320-01-116-3980
NSN 5998-01-401-5396
NSN 6135-01-388-8376
NSN 5975-00-452-6206
NSN 5905-01-327-2712