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 5999-00-823-6151
NSN 5996-00-055-3866
NSN 5915-01-506-5224
NSN 2925-01-131-0473
NSN 7035-01-620-2428
NSN 5925-01-136-7642
NSN 6220-00-817-4281
NSN 5910-00-152-7571
NSN 5925-01-273-9067
NSN 6650-01-086-1270
NSN 6150-01-007-5212
NSN 5996-01-235-1643