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 6645-01-082-0518
NSN 5930-01-244-4626
NSN 7035-01-016-4587
NSN 5945-00-451-8541
NSN 6135-01-142-2417
NSN 6220-01-371-8838
NSN 5975-01-233-3244
NSN 6650-01-432-1830
NSN 7035-01-546-2769
NSN 6610-01-542-8825
NSN 5965-01-170-8799
NSN 6650-01-411-6292