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 5998-00-852-8318
NSN 5895-01-646-6828
NSN 6650-01-620-4116
NSN 5975-01-613-0267
NSN 5855-00-247-7219
NSN 6620-00-415-1829
NSN 6220-01-189-1373
NSN 6110-01-322-8024
NSN 6685-01-342-6561
NSN 5935-01-206-1625
NSN 5910-01-396-8768
NSN 6320-01-439-5264