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 5985-01-474-0435
NSN 5950-00-682-2522
NSN 6610-00-261-8159
NSN 6135-00-985-7846
NSN 6610-00-764-4015
NSN 5965-01-431-9723
NSN 5998-01-502-6193
NSN 5965-01-328-9765
NSN 6650-01-480-0053
NSN 6620-01-526-2857
NSN 5998-01-293-5670
NSN 4140-01-239-2309