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 6130-01-065-9916
NSN 4140-01-437-3991
NSN 6130-00-291-0589
NSN 6620-01-438-8479
NSN 6145-01-433-3226
NSN 5905-01-057-4455
NSN 5835-00-546-4898
NSN 5975-00-840-5844
NSN 5999-01-317-3192
NSN 5835-01-332-2867
NSN 6145-00-768-1956
NSN 6135-01-322-4655