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 5905-01-513-8292
NSN 6240-01-512-1856
NSN 5996-01-111-8580
NSN 6150-01-317-3639
NSN 6650-00-102-2606
NSN 6105-01-455-5130
NSN 5835-00-422-1441
NSN 5945-01-167-3176
NSN 6150-01-229-6459
NSN 5855-00-014-5008
NSN 5945-01-439-9665
NSN 5999-00-423-8142