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 5930-01-578-0374
NSN 5996-01-063-6556
NSN 2925-01-032-3814
NSN 5985-01-642-0786
NSN 7035-00-135-4758
NSN 2925-01-142-0981
NSN 4140-01-327-3241
NSN 5999-00-834-5520
NSN 6685-01-398-4172
NSN 6650-00-736-8456
NSN 5910-01-066-8651
NSN 4140-00-200-0970