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 5915-00-583-4970
NSN 5960-01-110-2668
NSN 5895-01-461-7998
NSN 6145-01-098-3899
NSN 6610-00-410-2866
NSN 6620-00-730-8699
NSN 5915-01-546-2633
NSN 2925-01-543-0073
NSN 5998-01-162-3925
NSN 6110-01-063-4881
NSN 6610-01-258-7059
NSN 5925-01-146-9641