The AlphaTec® 38-514 38-520 38-628 series offers the highest resistance to the most aggressive chemicals without compromising finger sensitivity or comfort.AlphaTec® Butyl 38-514 & 38-520 provide superior protection against aldehydes, ketones, and esters, as well as concentrated mineral acids.AlphaTec® Viton®/Butyl 38-628 offers superior protection against aliphatic, halogenated & aromatic hydrocarbons (benzene, toluene, xylene) and concentrated mineral acids.AlphaTec® 38-514 38-520 38-628 gloves are surprisingly flexible, providing excellent finger sensitivity. They are designed for maximum comfort: a natural, curved, ergonomic shape and a soft surface. They are easy to put on and provide a secure grip.They contain no latex proteins, eliminating the risk for latex allergy.