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 5975-01-605-0496
NSN 5910-01-570-6288
NSN 5905-00-255-7309
NSN 5999-00-776-1625
NSN 6110-01-626-6398
NSN 6645-01-370-5264
NSN 6220-01-543-4608
NSN 4140-01-370-5609
NSN 5855-01-034-3845
NSN 5905-01-202-7461
NSN 6220-01-054-2804
NSN 6650-00-710-8130