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 6150-01-218-8964
NSN 6645-00-063-1166
NSN 6650-01-527-6017
NSN 6645-01-229-3369
NSN 5835-00-762-9675
NSN 4140-01-612-4049
NSN 5855-00-361-0167
NSN 5985-01-097-2829
NSN 6610-01-210-4306
NSN 6105-00-483-1370
NSN 6105-01-202-5744
NSN 5930-01-601-2955