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 5915-01-317-3541
NSN 5965-01-133-1745
NSN 6620-01-249-8696
NSN 2925-00-737-6476
NSN 6135-01-515-2668
NSN 5925-00-124-5015
NSN 6240-01-441-0027
NSN 6145-01-231-9169
NSN 7035-01-406-5232
NSN 6110-01-227-3869
NSN 6105-01-211-1101
NSN 5920-00-189-0858