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 6610-01-021-8908
NSN 6650-01-329-4742
NSN 6105-01-594-2251
NSN 6105-00-432-9469
NSN 5855-01-225-5855
NSN 6145-01-367-6503
NSN 5895-00-227-4752
NSN 5920-01-532-6477
NSN 6135-00-983-9187
NSN 5920-01-142-1836
NSN 4140-00-289-9263
NSN 6320-01-006-6138