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 5905-00-240-5178
NSN 5835-01-067-6619
NSN 5910-01-281-6964
NSN 6145-01-253-5969
NSN 5945-01-494-9374
NSN 5835-00-257-2852
NSN 6620-01-561-9171
NSN 6320-01-108-5933
NSN 6620-01-537-1326
NSN 6650-01-159-4251
NSN 5910-00-244-1622
NSN 5835-01-264-8782