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 5855-01-630-5790
NSN 5960-01-260-7430
NSN 5835-01-236-6514
NSN 5915-01-391-6618
NSN 6135-00-191-6444
NSN 6650-01-444-8313
NSN 6320-01-352-5653
NSN 5950-00-127-7081
NSN 2925-00-737-6476
NSN 5895-00-099-9532
NSN 6130-01-210-4736
NSN 6685-00-582-1215