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 5920-01-605-4077
NSN 6240-00-630-8069
NSN 6610-01-165-9458
NSN 5935-01-263-9154
NSN 6320-00-646-3311
NSN 5999-01-367-2843
NSN 5950-00-775-0165
NSN 7035-01-227-7492
NSN 5905-01-432-4226
NSN 5965-01-561-8862
NSN 6620-01-512-3032
NSN 7035-01-514-4617