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 5935-00-917-3470
NSN 5990-00-847-1164
NSN 7035-01-206-2623
NSN 5998-01-250-2887
NSN 5895-00-192-0270
NSN 2925-00-964-7128
NSN 5950-00-587-3718
NSN 5915-01-042-5619
NSN 2925-00-263-2714
NSN 5915-01-223-5717
NSN 5895-00-140-4504
NSN 6135-01-202-8113