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 5999-01-173-4924
NSN 6130-01-428-9106
NSN 5935-01-444-4086
NSN 6650-00-766-0733
NSN 6145-01-010-3402
NSN 5905-01-602-8337
NSN 4140-01-124-0623
NSN 5925-01-071-1802
NSN 6135-01-399-6812
NSN 6650-01-646-1643
NSN 7035-01-411-6062
NSN 5895-01-498-8667