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 5965-00-196-7320
NSN 7035-01-538-7381
NSN 5998-01-079-7023
NSN 6110-01-473-3227
NSN 5925-00-733-5497
NSN 6145-00-465-1641
NSN 6610-00-276-1716
NSN 5835-00-073-0790
NSN 5915-00-597-0038
NSN 2925-00-041-0439
NSN 4140-01-418-9453
NSN 5996-00-132-4203