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 5905-01-509-7973
NSN 5935-01-373-7498
NSN 5835-01-170-5537
NSN 2925-01-138-8104
NSN 6135-01-305-6958
NSN 5999-01-173-3179
NSN 6130-01-345-4477
NSN 5905-01-276-1118
NSN 5990-01-463-2279
NSN 6145-01-590-4140
NSN 6645-00-628-6515
NSN 6685-01-605-0946