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 5950-01-196-9441
NSN 5950-00-781-4693
NSN 5950-01-580-0598
NSN 5925-01-409-2616
NSN 6620-01-189-8153
NSN 5999-01-108-8824
NSN 6645-01-376-2336
NSN 5990-01-612-5323
NSN 7035-00-286-6221
NSN 6650-00-658-9627
NSN 5925-01-580-5744
NSN 6645-00-269-2764