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 5985-00-529-0093
NSN 6135-01-466-3980
NSN 5910-01-179-3755
NSN 5950-00-579-9487
NSN 5999-01-474-3213
NSN 5915-01-570-1782
NSN 5910-01-526-2733
NSN 5835-00-980-0468
NSN 5960-01-151-4518
NSN 6135-00-437-5182
NSN 5905-01-276-7156
NSN 5895-00-234-6319