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 5915-01-566-2177
NSN 6105-01-449-1046
NSN 5945-01-537-4317
NSN 5999-00-666-3838
NSN 5998-01-631-2640
NSN 5999-01-446-6541
NSN 5998-00-570-6642
NSN 2925-01-446-6523
NSN 6685-00-860-0452
NSN 5935-01-167-1644
NSN 5998-01-021-3043
NSN 6650-01-049-5361