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 5998-00-292-9515
NSN 5920-01-129-0320
NSN 6150-01-465-1095
NSN 6610-00-256-8006
NSN 6650-01-261-3013
NSN 6110-00-578-7243
NSN 5910-01-245-6619
NSN 5945-01-249-7364
NSN 5990-01-544-0364
NSN 5905-00-261-3418
NSN 5930-01-003-2813
NSN 6220-00-902-7328