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 6320-00-857-4073
NSN 6145-00-162-1222
NSN 6145-01-239-6726
NSN 5985-00-706-8491
NSN 5895-01-492-5962
NSN 5895-01-544-9823
NSN 5965-01-353-3725
NSN 5999-01-475-8060
NSN 6220-01-433-0493
NSN 5996-00-438-3154
NSN 6150-01-519-9162
NSN 6220-01-467-1941