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 5925-00-761-0105
NSN 5990-01-544-4360
NSN 5998-01-212-3862
NSN 4140-00-933-4024
NSN 5990-01-241-9472
NSN 6105-00-116-7843
NSN 6145-01-386-4299
NSN 6220-00-279-1508
NSN 6135-01-202-8113
NSN 6650-01-369-6536
NSN 5925-00-081-9135
NSN 5985-00-187-8985