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 4140-01-190-1023
NSN 5920-01-401-5315
NSN 5945-01-519-8004
NSN 6130-01-499-4254
NSN 6610-01-010-9392
NSN 7035-01-312-3577
NSN 6220-01-535-3260
NSN 6105-00-925-2226
NSN 5935-01-484-3084
NSN 7035-01-232-2657
NSN 6135-01-062-9356
NSN 5935-01-037-0900