NBR O Rings QYD type is a special seal for cylinder and piston that conforms to Chinese standards. The groove design can adopt Chinese standard JB/T6656.Nitrile O Ring QYD application range:Working pressure: ≤1.6MPaWorking temperature: -20℃~+80℃Reciprocating speed: ≤0.5m/sMedium: Compressed air. O Ring Seal Installation:Such seals shall have axial clearance (see columns h and H in the table), and integral pistons may be used. To avoid damage to the sealing lip, precautions should be taken to avoid sharp edges during installation.Material:High-performance NBR material with a Shore hardness of about 80 degreesOrder example:QYD-100 or QYD-100 88 12 or with part number PJ1022B0