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 5975-01-634-0678
NSN 5935-00-975-1701
NSN 2925-01-538-1343
NSN 6685-01-470-6827
NSN 5910-00-468-5915
NSN 5855-00-079-2370
NSN 5990-01-370-7912
NSN 5835-01-216-6208
NSN 6110-01-361-0322
NSN 4140-01-227-0370
NSN 6610-01-435-5425
NSN 5975-01-584-3805