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 5960-01-515-4791
NSN 5935-01-161-7165
NSN 6620-01-598-2271
NSN 5920-01-320-7660
NSN 7035-01-153-1767
NSN 5990-01-204-7576
NSN 2925-00-073-9375
NSN 6240-01-592-3176
NSN 5998-01-530-7460
NSN 6650-00-889-6802
NSN 2925-00-789-1106
NSN 5855-01-130-1501