Sorbothane Bumpers

"Sorbothane Half Hemispheres" come in 3 durometers or "Duro" "30 Duro" (the softest), "50 Duro", and "70 Duro" (The most firm). The "Sorbothane Hemispheres" also come with and with out a Urethane (Urethane coating only available in "50 Duro" with custom orders). Raw Sorbothane has a great natural "Stickiness" but be careful because it does contain "Plasticizer" which can stain raw wood. The Urethane coating on the other hand does eliminate the natural "Stickiness" of the Sorbothane but it also offers a protective layer to protect raw wood from being stained by the plasticizer.