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 5960-00-688-3940
NSN 5965-01-585-1527
NSN 6130-00-259-1697
NSN 5945-00-679-3960
NSN 5960-00-950-7194
NSN 5910-01-061-8352
NSN 5999-01-059-7114
NSN 5960-01-507-9112
NSN 6610-01-157-0426
NSN 6220-00-018-4484
NSN 4140-01-463-9299
NSN 6650-01-420-5586