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 6135-01-360-1620
NSN 5915-01-366-7774
NSN 6645-00-485-1440
NSN 5920-00-276-0556
NSN 5996-01-659-5008
NSN 5915-01-517-8305
NSN 5915-01-258-7435
NSN 5990-01-087-3103
NSN 6145-01-071-2126
NSN 5985-01-493-9298
NSN 5915-01-025-1362
NSN 4140-01-384-7778