Dow DOWSIL™ PR-4040 Prime Coat Clear is a one component, dilute solution of silane coupling agents dispersed in heptane, that is used to increase the bonding of room temperature and heat curing silicones to a variety of surfaces such as glass, plastics, and metals. 340 g Can.
| Typical Use: | Used for increased adhesion. | 
| Brand: | DOWSIL | 
| Color: | Clear | 
| Flash Point: | -12.8 °C | 
| Specific Gravity: | 0.74 @ 25 °C | 
| Spray: | No | 
| Viscosity: | 1 |