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 6145-01-086-2842
NSN 5960-00-190-5817
NSN 6320-00-731-6134
NSN 6685-01-411-6623
NSN 6320-00-790-4844
NSN 7035-00-803-3056
NSN 6645-01-302-6243
NSN 6150-01-582-5156
NSN 6650-01-595-6102
NSN 4140-00-557-7001
NSN 5965-01-475-3024
NSN 5930-01-597-6511