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 2925-01-354-1752
NSN 5920-00-276-8657
NSN 5895-01-063-6823
NSN 5835-01-538-8080
NSN 5935-00-484-9471
NSN 6130-01-495-3339
NSN 6320-01-418-2611
NSN 6220-01-234-5200
NSN 5965-01-474-1625
NSN 5855-01-281-6689
NSN 6135-01-235-4168
NSN 5925-01-517-2402