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 5950-01-288-6539
NSN 5855-00-149-0766
NSN 6145-01-185-7803
NSN 5965-01-050-8447
NSN 5975-00-965-6909
NSN 5975-01-308-5624
NSN 5965-00-804-1374
NSN 5960-01-453-6170
NSN 6320-01-261-5983
NSN 5920-01-314-0388
NSN 6145-00-539-9799
NSN 5910-00-984-6184