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 6645-01-556-5263
NSN 2925-00-992-2566
NSN 5945-01-077-3567
NSN 6620-00-079-0311
NSN 5835-00-876-4544
NSN 6150-01-575-7812
NSN 6610-01-425-1523
NSN 6130-00-928-9532
NSN 5930-01-557-8057
NSN 6685-01-435-6496
NSN 6110-01-556-6862
NSN 6650-00-941-2585