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 6145-01-028-9984
NSN 6130-01-302-9105
NSN 6135-01-449-2144
NSN 5925-01-445-9611
NSN 5960-00-873-4539
NSN 6220-01-170-2611
NSN 5999-01-021-0179
NSN 5990-01-037-9801
NSN 6645-01-518-7287
NSN 4140-01-261-6778
NSN 6105-01-101-0057
NSN 5945-01-128-7197