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 6145-00-199-8066
NSN 5990-00-121-2134
NSN 4140-00-671-1121
NSN 5910-01-141-6667
NSN 6240-00-227-0135
NSN 6150-01-384-3995
NSN 5975-01-459-4607
NSN 5835-01-017-7486
NSN 6220-01-457-7766
NSN 5990-00-925-3925
NSN 5920-01-246-5678
NSN 6685-01-343-5523