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 6620-00-155-2608
NSN 5925-01-626-8112
NSN 5915-01-207-6501
NSN 6150-01-270-9035
NSN 5935-00-423-7243
NSN 6610-00-695-2280
NSN 5998-01-476-1162
NSN 6620-01-474-1890
NSN 2925-01-019-8735
NSN 2925-01-421-0068
NSN 5930-00-371-8420
NSN 6240-01-500-1714