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 5999-01-046-9608
NSN 6620-01-350-5103
NSN 6105-00-553-1458
NSN 5985-00-920-3877
NSN 5895-00-125-5465
NSN 5975-01-057-4371
NSN 5965-01-413-7290
NSN 5999-00-057-7100
NSN 6620-00-811-7614
NSN 5990-00-607-1003
NSN 5990-00-807-3623
NSN 6620-01-446-7868