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 6240-01-089-6149
NSN 6110-01-530-9514
NSN 5835-01-182-1966
NSN 5999-00-164-2981
NSN 5855-00-879-5849
NSN 5945-01-521-0916
NSN 6240-01-371-0978
NSN 6130-00-525-9271
NSN 5930-00-755-6650
NSN 6130-01-451-4256
NSN 5920-00-702-6694
NSN 6320-01-585-8468