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 5996-00-852-1730
NSN 6620-00-170-5296
NSN 6135-00-455-2425
NSN 6145-01-148-9793
NSN 5920-01-382-3746
NSN 5950-01-526-8268
NSN 5915-01-601-4993
NSN 5996-01-510-5431
NSN 5915-00-525-5753
NSN 5895-01-170-3357
NSN 5999-01-286-9303
NSN 5999-00-409-3195