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 6135-01-433-2062
NSN 6110-00-205-1778
NSN 5985-01-235-7068
NSN 7035-00-465-3298
NSN 5930-01-087-3264
NSN 5975-01-070-8179
NSN 5960-01-491-9916
NSN 5835-01-020-5650
NSN 5985-01-369-7021
NSN 5945-01-624-5630
NSN 6150-00-707-0123
NSN 5920-01-417-3142