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 6110-01-285-8556
NSN 5855-01-020-7982
NSN 6240-01-569-4072
NSN 5895-01-500-0563
NSN 2925-01-025-0082
NSN 5920-00-165-0390
NSN 5998-00-959-8382
NSN 5905-01-630-2478
NSN 6110-00-508-5892
NSN 5915-00-239-0716
NSN 5935-01-443-1376
NSN 7035-00-897-7567