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 5985-01-457-4811
NSN 5895-01-449-7560
NSN 5935-00-865-4174
NSN 5985-01-137-8861
NSN 5985-00-660-4699
NSN 5990-01-443-2931
NSN 5930-01-432-8781
NSN 6240-01-376-8646
NSN 5855-00-100-9003
NSN 6105-01-145-6794
NSN 5965-01-651-3775
NSN 5975-01-274-0322