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 5990-01-421-5342
NSN 6650-01-144-4672
NSN 6320-01-029-4220
NSN 6650-01-160-9160
NSN 5965-00-303-9701
NSN 6150-00-948-6710
NSN 6650-00-430-0296
NSN 6130-01-411-9914
NSN 6645-00-149-1100
NSN 6130-01-140-6949
NSN 6650-01-464-8885
NSN 6620-00-186-8220