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 6220-01-580-4702
NSN 6110-00-588-2440
NSN 5925-01-565-7850
NSN 5960-00-257-4203
NSN 6645-00-825-5677
NSN 5999-01-551-1371
NSN 5998-00-689-1717
NSN 5910-00-285-6400
NSN 6150-01-534-2732
NSN 6685-01-630-5459
NSN 5945-01-139-7093
NSN 6105-00-078-7588