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 6135-01-472-9011
NSN 4140-00-229-0915
NSN 2925-01-156-4335
NSN 6610-01-322-7677
NSN 5835-01-632-6627
NSN 6650-00-505-4682
NSN 6620-00-147-6034
NSN 6135-01-560-8130
NSN 5998-01-285-3027
NSN 6110-01-084-8217
NSN 5985-00-920-3520
NSN 2925-01-033-8948