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 6130-01-429-8701
NSN 6645-01-127-1793
NSN 5950-00-106-8954
NSN 6135-00-078-9931
NSN 5965-00-925-1725
NSN 7035-00-413-0992
NSN 5925-00-830-8148
NSN 5990-01-432-4249
NSN 5996-01-248-0218
NSN 6650-00-067-3572
NSN 5999-01-364-0149
NSN 7035-00-153-3826