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 6220-01-168-7773
NSN 6130-00-280-2340
NSN 2925-01-384-4139
NSN 6105-01-502-9273
NSN 6240-00-101-0008
NSN 6650-01-161-1624
NSN 6130-00-008-5144
NSN 5920-01-598-8984
NSN 7035-01-555-8793
NSN 7035-01-462-1957
NSN 5998-01-449-2263
NSN 6620-01-369-5876