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 2925-00-614-1758
NSN 5855-00-316-5050
NSN 6685-01-391-6790
NSN 6130-01-248-5318
NSN 7035-01-305-1950
NSN 5996-00-538-2239
NSN 5998-01-018-3766
NSN 6150-00-179-1861
NSN 5996-01-061-6894
NSN 5996-01-346-7277
NSN 6130-01-582-4310
NSN 6220-00-178-8536