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 5999-00-917-7883
NSN 5985-00-908-9123
NSN 6130-01-335-2537
NSN 6320-01-449-1014
NSN 7035-01-227-2546
NSN 6610-01-556-2353
NSN 5990-00-419-0236
NSN 5945-01-477-4032
NSN 5930-01-159-7103
NSN 2925-00-257-2872
NSN 2925-00-642-8854
NSN 5835-01-602-0311