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 5915-01-428-9977
NSN 5895-01-127-4109
NSN 5960-00-105-1934
NSN 6135-01-445-6157
NSN 5895-01-068-3279
NSN 5855-00-198-3197
NSN 5855-00-879-5849
NSN 4140-01-446-6007
NSN 6610-00-901-5137
NSN 5960-01-226-0342
NSN 5996-01-278-9294
NSN 5925-00-391-6987