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 6240-00-319-4549
NSN 5996-00-285-3082
NSN 6105-00-508-1239
NSN 6145-01-337-5554
NSN 5855-00-779-2854
NSN 5950-01-335-7969
NSN 6145-00-089-5170
NSN 5965-01-250-8542
NSN 5920-01-062-6209
NSN 5915-00-931-8489
NSN 5990-01-130-4959
NSN 5999-00-336-3237