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 5935-01-641-7731
NSN 5985-01-359-2108
NSN 6620-01-109-2764
NSN 5996-01-125-5781
NSN 6645-00-965-1488
NSN 5915-01-621-4002
NSN 5930-00-403-1161
NSN 6650-01-633-9147
NSN 6145-00-765-6736
NSN 6240-01-126-9167
NSN 6130-00-851-6664
NSN 5999-00-369-9457