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 5935-01-203-2108
NSN 5915-01-183-7977
NSN 5920-01-141-6885
NSN 5960-01-065-0273
NSN 6240-01-445-8673
NSN 7035-01-555-5260
NSN 6320-01-544-6447
NSN 6620-01-151-9590
NSN 5920-01-440-9859
NSN 6220-00-931-8837
NSN 6130-01-559-1062
NSN 6240-01-435-6505