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 6150-01-448-1048
NSN 5990-01-140-5497
NSN 6145-00-269-4271
NSN 6620-00-873-9825
NSN 5996-00-160-1772
NSN 6645-01-228-7886
NSN 5999-00-549-0714
NSN 6130-01-279-3117
NSN 4140-01-201-9945
NSN 6135-01-159-9705
NSN 5965-00-378-3403
NSN 6145-01-127-1622