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 6610-01-471-5599
NSN 5998-01-278-3562
NSN 4140-01-338-9080
NSN 2925-00-787-1006
NSN 6135-01-340-2599
NSN 4140-00-135-0611
NSN 5925-01-339-4840
NSN 7035-01-442-7947
NSN 6150-01-303-0828
NSN 6320-01-538-0775
NSN 5985-01-481-3986
NSN 5965-01-241-0553