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 5998-01-158-3006
NSN 5930-01-435-1073
NSN 2925-01-411-4666
NSN 2925-01-415-2140
NSN 5960-01-087-2376
NSN 6135-01-222-0703
NSN 5998-01-432-1549
NSN 2925-00-899-4261
NSN 5965-01-313-6569
NSN 5999-01-064-0309
NSN 5930-00-794-2903
NSN 6650-00-498-2416