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 6320-00-456-0836
NSN 5920-00-957-6859
NSN 6135-01-445-6589
NSN 6240-00-974-3556
NSN 5835-01-394-7589
NSN 6220-00-228-3735
NSN 6610-01-408-7452
NSN 4140-00-594-4452
NSN 6105-00-450-6053
NSN 6145-01-105-5335
NSN 5915-01-183-5010
NSN 7035-00-131-8219