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 6150-01-495-9433
NSN 6110-01-529-6503
NSN 6650-00-862-2142
NSN 5965-00-244-6055
NSN 5990-00-132-2680
NSN 5996-01-656-1558
NSN 5950-01-421-9243
NSN 5920-00-806-3152
NSN 5915-01-107-1978
NSN 5935-00-466-9825
NSN 5910-01-455-4903
NSN 4140-01-608-8606