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 5985-00-955-6637
NSN 6105-00-660-7582
NSN 6320-00-483-0451
NSN 5915-00-576-0252
NSN 6220-01-213-6154
NSN 5895-01-547-0789
NSN 6105-00-732-5445
NSN 6150-01-441-9359
NSN 5960-00-665-1057
NSN 5895-00-363-1486
NSN 6645-01-227-2036
NSN 5915-01-360-1325