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 5996-00-248-7061
NSN 6320-01-547-2743
NSN 4140-01-553-6883
NSN 6320-01-225-0178
NSN 7035-00-463-7143
NSN 6320-01-111-0960
NSN 5910-01-195-7570
NSN 5975-00-221-1016
NSN 5855-00-145-3307
NSN 6110-00-035-8794
NSN 5920-01-474-6192
NSN 5998-01-292-2802