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 5999-00-519-8423
NSN 7035-01-305-1950
NSN 5950-00-295-8842
NSN 6135-00-078-9931
NSN 6240-01-237-1481
NSN 6130-01-269-5938
NSN 5905-00-213-6180
NSN 5920-00-170-3576
NSN 4140-00-381-4563
NSN 5920-00-127-9992
NSN 5915-00-244-1702
NSN 6220-01-647-6986