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 6645-01-359-5769
NSN 5920-00-761-8062
NSN 6240-01-469-9682
NSN 6135-01-389-8289
NSN 5915-01-025-1362
NSN 5935-00-449-3339
NSN 6150-01-033-4114
NSN 6110-01-338-2724
NSN 6220-01-072-7575
NSN 6135-00-351-8606
NSN 5920-01-341-6741
NSN 5930-01-136-4046