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 5960-01-343-5912
NSN 5945-01-112-0327
NSN 5935-01-211-1597
NSN 5905-01-152-1874
NSN 5990-01-478-8638
NSN 6145-01-579-9714
NSN 5998-01-372-2351
NSN 5998-00-433-6165
NSN 6220-01-660-5690
NSN 6610-01-340-1761
NSN 5915-01-618-8304
NSN 6110-00-618-4171