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 5950-01-434-4466
NSN 6650-01-139-9534
NSN 6320-00-370-7944
NSN 5998-01-176-8310
NSN 6620-01-611-7907
NSN 6650-01-337-4365
NSN 6685-01-203-5023
NSN 5999-01-400-5933
NSN 2925-01-466-0892
NSN 5835-01-238-3381
NSN 5960-01-157-7009
NSN 5920-01-460-2286