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 5950-01-175-8397
NSN 6320-01-323-7565
NSN 5996-01-156-9688
NSN 5835-01-209-6410
NSN 5915-00-106-6129
NSN 5975-00-840-5844
NSN 5998-01-152-0930
NSN 5895-00-125-9535
NSN 6150-01-325-1075
NSN 5920-01-382-3337
NSN 5996-01-003-0831
NSN 5975-00-784-4591