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 2925-01-197-7864
NSN 5998-01-358-6283
NSN 6145-01-345-4529
NSN 6240-00-538-1416
NSN 6150-00-268-3659
NSN 5910-00-990-1535
NSN 6220-01-437-5659
NSN 5990-00-767-0893
NSN 6620-00-929-1188
NSN 5855-01-558-9357
NSN 6145-00-104-7789
NSN 6135-01-577-5532