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 2925-01-346-9522
NSN 5895-01-445-6690
NSN 5855-01-577-7174
NSN 5990-00-492-5063
NSN 7035-01-400-3666
NSN 6320-01-284-4508
NSN 5960-01-588-1441
NSN 5905-00-722-7757
NSN 6220-00-079-2943
NSN 5935-01-486-6782
NSN 6150-01-594-2415
NSN 6685-01-601-9439