Feldspar F-4/140.00 ZNO/3.00 LBM 125/0.75 Natural Rubber Latex*/25.00 Ammonium Acetate/1.25 Sulfur/2.25 Aqua Black 100/0.35 Antioxidant/1.00 *Scraped on jute at a thickness of 3/16 in. and cured 23 min at 280'F. Ethyl Zimate/1.00 Potassium Oleate/3.00 "Pliolite" 5356/75.00 Zinc Captax/1.50