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 6110-01-400-4207
NSN 6150-01-596-1084
NSN 5985-01-300-0821
NSN 2925-00-041-0439
NSN 6105-01-263-7234
NSN 2925-01-190-3121
NSN 6220-01-543-2443
NSN 5910-00-860-8955
NSN 6685-00-506-0090
NSN 7035-00-185-8683
NSN 6685-01-152-1781
NSN 6645-01-400-2119