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 5950-00-233-4754
NSN 5950-01-485-7795
NSN 5990-01-578-5382
NSN 6150-01-531-4328
NSN 5945-00-983-5984
NSN 6105-01-142-6179
NSN 5985-00-297-7526
NSN 5920-01-030-7311
NSN 6610-01-008-5264
NSN 5985-01-384-2487
NSN 6610-01-660-0808
NSN 5935-00-736-9039