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 6320-01-278-9832
NSN 4140-01-065-8148
NSN 4140-00-820-1173
NSN 5930-00-630-2333
NSN 5935-00-876-7890
NSN 5950-01-560-6721
NSN 5930-01-435-4566
NSN 5935-00-155-4662
NSN 6610-01-539-0014
NSN 6620-01-155-9448
NSN 6240-01-633-9357
NSN 5935-01-155-9684