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 6610-01-365-7796
NSN 5965-01-142-7862
NSN 5998-01-004-0586
NSN 5998-00-404-1966
NSN 5925-01-591-6722
NSN 5920-01-074-6280
NSN 5945-01-302-4766
NSN 6645-01-335-9183
NSN 6135-00-519-1325
NSN 5975-00-770-4361
NSN 6105-01-465-9244
NSN 2925-01-357-2512