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 5985-01-131-9430
NSN 5915-01-442-6050
NSN 4140-01-383-8599
NSN 7035-00-206-6123
NSN 5915-01-397-3319
NSN 5965-01-449-1101
NSN 5985-00-251-1453
NSN 6130-00-328-0261
NSN 6110-00-998-3626
NSN 5990-00-636-4218
NSN 2925-00-278-9468
NSN 5945-01-094-6343