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 5920-01-542-5306
NSN 5925-01-634-0664
NSN 6135-01-302-4773
NSN 5895-00-862-5564
NSN 7035-01-289-4022
NSN 2925-00-355-5130
NSN 5895-00-203-2379
NSN 5999-01-123-9685
NSN 6150-01-549-4465
NSN 5996-01-460-1484
NSN 5935-00-249-3319
NSN 6105-01-256-6427