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 5950-01-048-1671
NSN 5990-00-242-3754
NSN 5930-01-155-3124
NSN 7035-00-205-1932
NSN 5920-00-964-9986
NSN 6150-01-469-7080
NSN 5965-01-350-1890
NSN 6150-00-671-2081
NSN 6110-01-340-4885
NSN 6220-00-375-0473
NSN 5930-00-456-0530
NSN 5975-01-314-4975