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 5930-01-152-6151
NSN 6650-00-009-9510
NSN 5910-01-392-1055
NSN 6610-01-394-4944
NSN 6610-00-443-2980
NSN 6320-00-149-7570
NSN 6620-00-079-0311
NSN 5930-01-327-2313
NSN 6145-00-126-1606
NSN 6620-01-295-5341
NSN 4140-01-238-4362
NSN 5835-01-104-5707