Add to Cart RH S-18 Solvent/Thinner for Adhesives - 1 gallon RH MSRP: Now: $88.00 Was: RH S-18 Solvent/Thinner for Adhesives - 1 gallon The S-18 solvent is a cleaning agent for post-application cleanups, effectively removing adhesive residues that can accumulate on surfaces and... MSRP: Now: $88.00 Was: Add to Cart