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 5998-00-850-2363
NSN 5895-00-144-8162
NSN 6320-01-204-2922
NSN 5930-00-341-7664
NSN 5975-00-780-0792
NSN 5855-01-394-3688
NSN 5945-01-265-2454
NSN 5925-01-371-2876
NSN 4140-00-912-1904
NSN 5935-01-326-8585
NSN 6135-00-078-9931
NSN 5960-01-548-4896