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 5910-01-481-3560
NSN 5920-00-753-5113
NSN 6620-01-147-5615
NSN 5985-01-351-6507
NSN 5835-01-380-0448
NSN 5990-00-800-1924
NSN 6645-01-228-8380
NSN 6135-01-415-1163
NSN 5990-01-462-9228
NSN 5975-01-178-0938
NSN 6610-00-594-6372
NSN 5930-01-503-0338