4011-40 - Wheel Chocks - Spark Proof - Exposed

4011-40 - SPARK-PROOF Urethane Heavy-Duty Double Wheel Chock Exposed

Designed specifically for tank cars and other freight cars loading or unloading hazardous materials, and where a spark from a steel wheel chock could ignite dust or fumes.

Urethane is truly the Miracle Material — combining great resistance to loads with the ability to compress to half of its thickness and then spring back to its original shape. Urethane will not degrade from corrosive materials and most chemicals.

SPARK-PROOF Urethane Wheel Chocks are tough enough to block a tank car, but resilient enough that the car can be pulled over the chock by a locomotive without derailing. No more trying to yank free a steel chock that is stuck under a wheel. When it’s time to move, just pull the car over the chock and retrieve the chock later.

Successfully Field Tested The SPARK-PROOF chock was successfully tested at the Association of American Railroad’s testing facility at Pueblo, Colorado and then at a shortline railroad.

Features: 4” high, ideal for chocking locomotives.- Handles are 24” long. - Wt: 9 lbs.

Cautions: For use on flat track only. Do not use chocks on grades. - Set brake before installing chocks. Rail car or locomotive must be stopped and brakes applied before chocks can be placed. - Do not use chock if rail car or locomotive is lifted up at one end for inspection or repair. - Chock both ends of the rail car or locomotive. Use on rails 90 to 155 lbs./yd. - Minimum wheel diameter 33". - Do not use on oily or greasy rail as chock will slide. - When rail car is ready to be moved, you may pull car over chocks. They will return to their original shape. - Replace chocks if urethane is torn or cracked.