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 7035-00-991-6877
NSN 7035-01-550-4429
NSN 5960-01-506-7039
NSN 5920-00-910-4531
NSN 5905-01-038-5366
NSN 5999-01-062-0739
NSN 4140-00-322-9987
NSN 5950-00-290-8090
NSN 5998-00-554-9725
NSN 6150-01-415-0017
NSN 5985-01-272-5552
NSN 5920-01-492-6512