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 6320-00-225-7013
NSN 6685-00-232-3239
NSN 5975-00-513-2712
NSN 6650-01-423-9772
NSN 6610-01-376-9199
NSN 6320-00-149-7570
NSN 5965-01-301-2553
NSN 2925-01-209-3584
NSN 5960-01-528-1147
NSN 6645-00-489-8575
NSN 5985-01-534-9055
NSN 5930-00-163-9508