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 2925-01-254-3068
NSN 5935-00-296-8999
NSN 6150-00-124-2440
NSN 5930-00-233-6370
NSN 6150-00-788-6064
NSN 6220-01-395-4136
NSN 5975-00-843-8226
NSN 5920-01-276-2886
NSN 6135-01-582-5987
NSN 7035-00-703-3535
NSN 5965-01-200-6613
NSN 5985-01-601-7047