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 5998-01-480-7530
NSN 5925-00-410-7560
NSN 5855-01-518-9198
NSN 6110-00-200-4777
NSN 6620-00-832-2556
NSN 6150-00-196-0696
NSN 5935-01-366-7189
NSN 5855-01-482-0440
NSN 5999-01-426-0064
NSN 6610-00-285-5366
NSN 5996-01-459-4480
NSN 5920-01-649-1420