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 6105-01-325-8925
NSN 5915-01-358-6898
NSN 5925-00-682-0742
NSN 5985-01-102-3991
NSN 5915-00-757-5372
NSN 5965-00-121-0923
NSN 6135-01-260-1100
NSN 5975-01-061-9919
NSN 6220-00-865-8069
NSN 6220-00-917-0881
NSN 5915-01-422-2014
NSN 5998-00-798-4534