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 5998-01-015-5339
NSN 5855-00-763-2155
NSN 5920-00-764-4061
NSN 5895-01-224-1111
NSN 5965-01-425-5857
NSN 5990-01-534-8609
NSN 6610-01-513-1764
NSN 5950-01-037-4298
NSN 5905-01-373-3835
NSN 6110-01-441-9041
NSN 4140-00-083-1120
NSN 5990-00-686-5868