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 5930-00-584-4563
NSN 6220-01-463-1958
NSN 5998-01-119-9648
NSN 6620-01-462-0001
NSN 6620-01-569-3313
NSN 5999-01-583-0439
NSN 5925-01-305-5198
NSN 7035-01-119-6271
NSN 6135-01-086-8167
NSN 5998-01-473-3168
NSN 5930-00-666-2971
NSN 5990-00-226-7894