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 5895-01-228-8342
NSN 5835-00-958-6231
NSN 5996-00-249-1104
NSN 6220-01-330-2429
NSN 5985-01-215-4720
NSN 6150-01-476-1597
NSN 6135-01-647-5692
NSN 6320-01-543-3238
NSN 5915-01-608-1437
NSN 5835-01-486-0545
NSN 5855-00-189-6066
NSN 6645-01-020-4557