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 5855-01-047-9267
NSN 6650-00-804-2039
NSN 5905-00-699-9723
NSN 5925-01-074-5832
NSN 5920-00-366-0111
NSN 6240-01-348-8975
NSN 6610-01-169-6134
NSN 5950-01-192-0000
NSN 5975-01-634-0678
NSN 5985-01-068-9959
NSN 5835-00-419-0575
NSN 6145-01-576-7738