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 6220-00-486-4426
NSN 6145-00-356-1923
NSN 5998-00-359-7814
NSN 6645-00-816-5337
NSN 5925-01-063-7107
NSN 5990-01-468-1292
NSN 5999-01-454-5162
NSN 5975-00-837-3293
NSN 5985-01-059-0451
NSN 5990-01-364-0813
NSN 6105-01-023-8441
NSN 5855-00-014-5008