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 6110-00-812-0226
NSN 5998-00-235-7483
NSN 5965-01-481-2422
NSN 2925-00-261-5800
NSN 5920-01-217-8379
NSN 4140-00-099-1716
NSN 5975-01-599-1121
NSN 6130-01-533-8427
NSN 5895-00-886-3158
NSN 5905-00-740-8205
NSN 5935-01-046-5586
NSN 6105-00-003-3316