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 6220-01-482-1443
NSN 6645-01-344-8702
NSN 2925-01-125-9169
NSN 7035-00-731-8729
NSN 4140-01-152-1214
NSN 5930-01-061-0761
NSN 6220-01-016-8128
NSN 5998-01-339-1638
NSN 4140-01-108-9084
NSN 5998-01-092-9767
NSN 5895-01-178-4061
NSN 6240-00-146-9322