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 5975-01-343-0254
NSN 5925-01-572-6279
NSN 6650-00-107-8509
NSN 5930-00-905-7224
NSN 5945-01-460-3365
NSN 6645-01-142-2416
NSN 6135-00-196-5267
NSN 6650-00-409-8949
NSN 7035-01-254-3606
NSN 5915-00-073-1806
NSN 6110-01-451-4326
NSN 5960-00-455-5256