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 5920-01-341-6741
NSN 5915-00-455-4559
NSN 5996-00-293-4687
NSN 6240-00-209-1883
NSN 6150-00-141-0293
NSN 6220-00-021-9040
NSN 4140-01-422-0439
NSN 4140-01-253-7648
NSN 5960-01-560-8461
NSN 2925-00-617-0826
NSN 6320-01-176-8367
NSN 5950-01-211-7018