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 7035-00-392-5417
NSN 6240-00-250-6904
NSN 6240-01-328-4023
NSN 5965-01-059-4028
NSN 6150-00-292-8778
NSN 5915-01-256-6179
NSN 5910-00-379-2349
NSN 5895-00-548-7562
NSN 5945-01-302-0188
NSN 5990-00-202-5127
NSN 5950-01-432-2038
NSN 5920-01-524-7151