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 6150-00-784-4068
NSN 5998-01-543-1398
NSN 5996-01-538-3703
NSN 5920-00-471-2548
NSN 6240-00-655-2523
NSN 5895-01-369-4224
NSN 6610-00-822-0431
NSN 5905-01-310-5999
NSN 5910-01-352-5068
NSN 5920-01-076-2679
NSN 6620-01-560-4497
NSN 5920-00-018-1452