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 6110-00-059-7028
NSN 5965-00-905-7561
NSN 5920-01-053-7566
NSN 5985-01-054-3578
NSN 6645-01-102-8127
NSN 5930-00-779-2484
NSN 6620-00-197-5130
NSN 6620-01-432-7032
NSN 6135-01-633-8502
NSN 6220-01-619-4878
NSN 4140-00-205-6491
NSN 6110-00-137-9544