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 5910-01-115-2258
NSN 6240-01-516-5589
NSN 5998-01-100-3496
NSN 6650-00-398-1821
NSN 6685-00-623-4785
NSN 6145-01-413-3286
NSN 5985-01-192-5509
NSN 6135-01-108-6057
NSN 5990-01-373-1465
NSN 5990-01-594-7470
NSN 5960-00-133-9234
NSN 2925-01-648-6859