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 5915-01-116-0964
NSN 5985-01-237-2570
NSN 5930-00-708-3589
NSN 6135-01-500-0572
NSN 5945-01-585-9974
NSN 6240-01-522-2070
NSN 5935-00-829-9904
NSN 5990-00-505-1546
NSN 6105-00-262-6843
NSN 5895-01-364-8459
NSN 5945-01-256-3148
NSN 5835-01-381-4452