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 5930-01-328-6511
NSN 6620-00-560-4406
NSN 5855-00-832-9341
NSN 5945-01-543-1127
NSN 6650-01-003-9355
NSN 7035-01-650-5506
NSN 6685-00-864-9309
NSN 5905-01-262-0392
NSN 6110-01-490-0246
NSN 5925-01-288-0025
NSN 5915-01-186-6464
NSN 4140-01-286-0536