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 6135-01-041-3829
NSN 5965-00-677-1447
NSN 6685-00-177-2563
NSN 5985-01-473-5077
NSN 6645-00-369-4410
NSN 5910-01-460-6504
NSN 7035-00-541-8516
NSN 5920-01-171-3624
NSN 6645-01-272-4758
NSN 6110-00-761-2065
NSN 7035-01-479-1840
NSN 2925-01-434-6945