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 5930-01-340-9146
NSN 7035-00-794-0792
NSN 4140-01-345-7808
NSN 6320-00-164-4087
NSN 5920-01-421-5362
NSN 5930-01-592-3257
NSN 5960-01-553-4557
NSN 2925-01-250-2731
NSN 6105-00-887-3793
NSN 5996-01-505-6099
NSN 5945-01-427-3790
NSN 5999-00-162-8932