Check the listing for details. GRAINGER APPROVED 40TP44 Plastic Strapping,Machine Strapping,3/8" 40TP44. Condition: New. Listed at 162.30 USD. Plastic Strapping, Strapping Application Standard Duty, Strapping Grade Machine Strapping, Strapping Width 3/8 in, Thickness 0.021 in, Break Strength 250 lb, Overall Length 12,900 ft, Core Diameter 8 in, Core Width 8 in, Strapping Finish Embossed, Color White Machine-grade polypropylene strapping is applied using a strapping machine and does not require seals. Strapping machines are used in moderate-to-high volume applications. Polypropylene strapping is a lightweight strap used to bundle newspapers, seal and bundle cartons, and secure light loads.Polypropylene strapping bands, sometimes called poly strapping, are a lightweight strap used to bundle newspapers, seal and bundle cartons, secure light loads, and for other light-duty applications. The embossed surface makes the strapping flexib.