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 5930-01-221-8353
NSN 5920-00-433-1854
NSN 6620-01-053-6650
NSN 2925-00-899-4261
NSN 6220-01-069-3685
NSN 6320-01-643-0850
NSN 7035-01-438-2108
NSN 6105-01-065-8244
NSN 5990-01-481-3080
NSN 5910-00-729-4963
NSN 5855-01-359-0373
NSN 5998-00-477-0865