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 5990-01-485-0260
NSN 6220-00-136-0018
NSN 5905-01-006-2728
NSN 5960-01-183-8213
NSN 5998-00-786-2267
NSN 6130-01-421-3354
NSN 6650-01-437-6279
NSN 5930-00-655-9288
NSN 7035-01-526-9270
NSN 6650-01-227-6032
NSN 5945-01-045-1225
NSN 6135-00-057-2005