• Polyester backing reduces stretch and recovery of tape associated with uneven stop-off line
• Thick adhesive coating reduces undercutting because adhesive blocks out solutions between fingers
• Specially designed adhesive that generally performs better when no ovens are used to heat tape and boards
• Polyethylene tape core instead of cardboard

3M™ Circuit Plating Tape 851 with polyester film and blended silicone and rubber adhesive used for PCB masking and other high-temperature applications. Thick adhesive coating. Green, 4.0-mil thick.