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 5920-01-379-7475
NSN 6320-00-790-4844
NSN 6620-01-221-7784
NSN 5910-01-386-7789
NSN 5996-01-346-8809
NSN 6220-00-078-5021
NSN 6650-01-189-7040
NSN 6135-00-377-9165
NSN 6110-01-054-9059
NSN 5990-01-021-7303
NSN 6130-01-371-3275
NSN 6145-01-630-9739