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 6240-00-306-9214
NSN 4140-01-117-5698
NSN 6240-00-152-3639
NSN 6130-00-269-0579
NSN 5920-01-027-0660
NSN 5915-01-050-1581
NSN 5990-01-555-6616
NSN 5920-01-424-3721
NSN 6130-01-608-3597
NSN 2925-01-554-5246
NSN 7035-01-088-6415
NSN 6620-00-761-2540