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 5910-00-514-2038
NSN 5905-00-280-7771
NSN 5925-00-925-2164
NSN 5990-01-426-7350
NSN 4140-00-472-4615
NSN 5855-01-634-0259
NSN 5930-00-528-9728
NSN 6650-00-264-0664
NSN 5915-01-643-8429
NSN 5895-01-149-8260
NSN 6135-00-767-0331
NSN 5975-00-079-0022