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 5985-01-302-4577
NSN 5915-01-007-6484
NSN 6135-01-576-9616
NSN 5996-00-136-1240
NSN 5910-00-724-7396
NSN 5996-01-660-6888
NSN 5855-01-013-6864
NSN 5985-01-397-8024
NSN 5996-00-121-0919
NSN 5930-01-129-0105
NSN 6645-01-519-2732
NSN 6610-00-325-0485