FOOTWEAR MARKINGS CHECKLIST Material Recommendation Nitrile rubber sole - For higher temperatures, oil and solvent resistant. Polyurethane soles - For general purpose use, oil and solvent resistant. PVC, PVC nitrile, rubber and polyurethane uppers - Where there is long term exposure to water and certain chemical applications. Water repellent leather uppers - Where there is an occasional exposure to water. Selecting the correct materials is critical, especially when contaminants are present. By choosing the correct material the maximum lifespan of footwear can be achieved. 173
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