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 5999-01-211-7831
NSN 6320-00-115-0883
NSN 5998-01-364-3542
NSN 6145-01-266-4105
NSN 5996-01-616-9538
NSN 6130-01-085-4230
NSN 5960-01-278-2852
NSN 5985-01-194-7925
NSN 7035-01-519-9270
NSN 2925-00-480-9068
NSN 6240-01-545-7040
NSN 5835-00-289-9080