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 5835-01-447-2544
NSN 6610-01-557-9727
NSN 5996-01-544-4811
NSN 6105-01-142-6179
NSN 5930-00-153-1400
NSN 5945-00-401-0612
NSN 6220-00-202-8591
NSN 6135-01-651-7287
NSN 5905-01-294-7561
NSN 5920-01-593-1753
NSN 5915-00-696-5475
NSN 6645-01-254-0489