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 2925-00-570-6309
NSN 5920-01-525-4654
NSN 6150-01-655-4922
NSN 5998-01-437-0454
NSN 6150-01-007-7483
NSN 2925-01-489-1394
NSN 5920-01-180-5440
NSN 5935-00-416-9176
NSN 5998-01-149-0586
NSN 6320-01-429-5728
NSN 5835-01-381-2683
NSN 5835-01-416-6455