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 5915-00-572-2503
NSN 5985-01-232-1206
NSN 5975-01-386-0657
NSN 6110-01-206-6479
NSN 5998-01-266-8753
NSN 2925-00-383-3523
NSN 5985-00-477-6189
NSN 5975-01-155-7500
NSN 5905-01-385-3269
NSN 6610-01-523-8547
NSN 6650-01-576-0214
NSN 2925-01-411-4666