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 5915-01-016-9041
NSN 5920-01-331-4712
NSN 6650-01-619-5129
NSN 5935-00-733-5918
NSN 4140-01-056-4453
NSN 6240-01-171-9500
NSN 7035-01-479-5268
NSN 6320-00-164-4087
NSN 4140-00-928-9097
NSN 5975-00-857-1033
NSN 6620-01-210-2538
NSN 5965-01-255-8691