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 5998-01-230-6040
NSN 6110-00-984-3291
NSN 6130-00-337-8054
NSN 5945-01-486-2538
NSN 5920-00-025-7895
NSN 6135-00-087-5300
NSN 5985-00-291-1140
NSN 2925-01-203-0493
NSN 2925-01-633-4048
NSN 5910-01-034-3197
NSN 5920-01-386-4195
NSN 5915-00-701-9135