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 5835-00-284-0882
NSN 6220-00-878-4802
NSN 5996-00-126-4786
NSN 4140-01-124-5519
NSN 6130-01-361-9268
NSN 6130-00-069-2826
NSN 5915-01-379-6876
NSN 5935-01-556-7466
NSN 5945-01-352-0663
NSN 2925-00-724-1317
NSN 5975-01-187-2725
NSN 6145-01-290-9351