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 6320-00-937-5625
NSN 6220-00-613-6808
NSN 6650-00-256-4297
NSN 6220-01-480-4000
NSN 6645-00-012-5834
NSN 6145-01-218-0850
NSN 5930-00-938-2292
NSN 6650-00-205-6282
NSN 5998-01-254-0551
NSN 6240-00-713-0237
NSN 5920-01-460-3166
NSN 6620-01-383-7519