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 6645-01-049-6116
NSN 5996-01-374-7224
NSN 6135-01-069-2482
NSN 5920-01-486-9067
NSN 6320-01-540-4885
NSN 4140-01-347-3344
NSN 5990-01-455-8035
NSN 4140-01-358-1104
NSN 6240-01-288-0555
NSN 2925-01-602-1975
NSN 5835-00-377-7020
NSN 6650-01-085-6088