When you apply Propaque you will understand why so many technicians will use no other opaque system. Ready to use opaque that is supplied pre-mixed in a convenient syringe. No mixing, no stirring, no change in consistency as you get to the end of a jar. Propaque has greater bond strength and reduced shrinkage after firing so the traditional black rim around the edge of the coping is eliminated. Suitable for use with most bonding porcelain systems, Propaque is quick and easy to use - it can save up to 40% of the time taken to apply traditional opaques.