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 6620-01-617-3915
NSN 5915-01-357-7585
NSN 6620-00-468-3665
NSN 6110-00-288-4179
NSN 5935-00-160-1037
NSN 5999-01-492-5707
NSN 5975-01-424-0113
NSN 5985-00-752-3222
NSN 5965-00-954-3011
NSN 6320-00-403-6003
NSN 5945-00-205-9431
NSN 6320-01-578-6006