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 5895-01-270-0302
NSN 5960-01-423-1085
NSN 5915-00-054-6637
NSN 6150-01-090-5153
NSN 5895-00-418-4639
NSN 6610-01-511-0982
NSN 5920-01-619-7253
NSN 6620-00-050-9831
NSN 5910-01-010-0324
NSN 7035-01-316-7860
NSN 5998-01-558-2841
NSN 5835-00-133-0599