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 6620-01-355-4339
NSN 5965-01-327-9234
NSN 6620-00-625-7248
NSN 5920-01-120-4300
NSN 5990-01-037-0274
NSN 5895-01-261-6457
NSN 4140-01-234-8568
NSN 5960-01-170-4057
NSN 5915-00-076-0129
NSN 7035-01-198-1512
NSN 5998-00-494-0898
NSN 5990-01-263-0362