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 5960-01-044-4902
NSN 6650-00-656-3066
NSN 7035-00-134-3143
NSN 6135-01-373-2518
NSN 6220-01-322-7443
NSN 4140-00-393-6279
NSN 5998-01-054-8002
NSN 6145-01-017-9567
NSN 5965-01-357-2317
NSN 5920-00-833-7245
NSN 5930-01-498-9616
NSN 4140-01-118-8918