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 5998-01-188-7555
NSN 5905-01-403-2806
NSN 6240-01-318-1522
NSN 6145-00-104-7789
NSN 6110-01-573-0238
NSN 5915-00-261-9970
NSN 5930-00-801-7064
NSN 4140-01-655-3052
NSN 6105-00-010-2386
NSN 5920-00-526-0462
NSN 5935-00-153-0012
NSN 5925-01-050-9032