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 5835-00-111-2953
NSN 5855-00-548-4742
NSN 5835-00-128-1967
NSN 5950-01-461-2404
NSN 5996-00-404-7813
NSN 5985-01-565-5451
NSN 5945-00-846-9244
NSN 5999-00-274-6294
NSN 6620-01-530-3198
NSN 5950-00-791-4059
NSN 6320-00-261-9136
NSN 6110-01-580-8323