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 5965-00-617-5731
NSN 6240-01-162-9086
NSN 5910-01-260-8546
NSN 5950-00-637-6131
NSN 5996-01-339-7539
NSN 4140-00-433-9571
NSN 6150-00-224-4887
NSN 5930-01-654-3195
NSN 5915-01-273-8922
NSN 5920-01-491-0749
NSN 6240-01-604-9172
NSN 5895-01-006-7932