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 5960-00-188-8648
NSN 5935-00-159-1551
NSN 6220-01-290-5152
NSN 6240-00-043-0269
NSN 6620-01-344-2862
NSN 6240-01-581-2123
NSN 5960-00-186-6344
NSN 2925-00-236-9986
NSN 6620-00-720-3278
NSN 5925-00-233-7523
NSN 5960-01-503-8411
NSN 5990-00-952-6742