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 5935-00-901-0624
NSN 5985-01-311-0867
NSN 5920-01-065-1824
NSN 6610-01-301-3513
NSN 5915-00-442-5168
NSN 4140-00-528-2921
NSN 6220-01-187-1028
NSN 6320-01-466-4175
NSN 5998-00-558-5851
NSN 5996-01-648-4989
NSN 5855-01-601-8145
NSN 5999-01-382-9776