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 5935-00-469-3097
NSN 5855-01-433-2220
NSN 6620-01-613-7996
NSN 5960-00-966-4918
NSN 4140-00-597-5260
NSN 5925-00-234-0211
NSN 7035-01-055-6806
NSN 5930-01-556-2905
NSN 6135-01-442-0888
NSN 5950-01-474-5010
NSN 6240-01-604-1293
NSN 6150-01-167-9104