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 5920-00-923-5048
NSN 5915-01-487-7703
NSN 5996-01-286-3806
NSN 5950-01-326-7667
NSN 6645-00-515-6148
NSN 6650-00-796-9972
NSN 6650-01-521-0902
NSN 6150-01-608-5130
NSN 7035-01-558-6203
NSN 5935-01-066-1342
NSN 7035-01-359-6108
NSN 5960-00-248-3065