RM Graphite HD Topcoat Hardener

RM Graphite GHD Topcoat Hardeners are premium 2K hardeners developed specifically for use with the RM Graphite GHD Commercial Vehicle Topcoat System. Available in H700 Fast, H750 Normal and H770 Slow, these hardeners allow painters to select the ideal curing speed to suit repair size, workshop temperature and production requirements, ensuring optimum application performance and a high-quality finish.

Each hardener is formulated to deliver excellent gloss retention, flow, durability and weather resistance while maintaining the outstanding appearance expected from the RM Graphite HD system. When mixed with GHD Topcoat and the appropriate reducer, they provide a smooth, high-build finish with excellent surface hardness and long-term UV resistance, making them ideal for commercial vehicle refinishing.

The H700 Fast Hardener is ideal for small repairs, cooler workshop temperatures and fast-turnaround jobs where reduced process times are essential. The H750 Normal Hardener is the versatile everyday option, suitable for most panel and vehicle refinishing work under normal workshop conditions. For large commercial vehicle repairs or warmer temperatures, the H770 Slow Hardener provides extended working time, superior flow and the highest-quality finish on large surfaces. RM also recommends H770 for achieving the very best final appearance.

Available Options:

• H700 Fast

• H750 Normal

• H770 Slow

Key Features:

• Genuine RM Graphite GHD Topcoat Hardeners

• Designed specifically for the RM Graphite GHD Topcoat System

• Available in Fast, Normal and Slow curing speeds

• Outstanding gloss, levelling and surface appearance

• Excellent UV resistance and long-term durability

• High surface hardness after curing

• Suitable for small repairs through to complete commercial vehicle resprays

• Optimised for varying workshop temperatures and repair sizes

• Professional commercial vehicle refinishing performance