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 2925-01-303-5266
NSN 6105-01-168-7124
NSN 2925-01-191-9668
NSN 5920-01-644-4407
NSN 5925-01-091-9731
NSN 5998-00-091-9167
NSN 6650-00-103-0867
NSN 5945-00-213-0101
NSN 5925-00-902-3240
NSN 4140-00-486-0396
NSN 6135-01-388-2761
NSN 6220-01-221-9429