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 5990-00-149-8181
NSN 5935-01-495-0044
NSN 4140-00-794-2960
NSN 7035-00-549-2722
NSN 6645-00-566-5537
NSN 6240-01-124-9916
NSN 5835-01-126-9358
NSN 5915-00-952-5658
NSN 6240-01-147-5115
NSN 5930-01-449-7143
NSN 5915-00-233-6346
NSN 5965-00-075-1485