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 5999-00-738-4321
NSN 5990-00-436-2224
NSN 5920-00-152-4003
NSN 6220-00-186-8565
NSN 5905-01-433-3541
NSN 5915-00-244-9805
NSN 6645-01-551-4790
NSN 6620-01-078-3160
NSN 6240-01-429-9826
NSN 5915-00-154-0162
NSN 7035-01-107-2811
NSN 6150-01-579-2473