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 5935-00-415-0986
NSN 5930-01-590-0164
NSN 2925-01-043-9786
NSN 6645-01-185-6210
NSN 6650-00-498-8192
NSN 6145-01-315-1620
NSN 5925-00-478-7352
NSN 6135-00-643-4843
NSN 5920-01-349-3488
NSN 5915-00-523-0146
NSN 6110-00-598-2574
NSN 5915-01-215-5942