New Mold Seal for Replacing Traditional Cope Rope

Refcotec says their mold sealing product can reduce the waste of mold leaks from variable cope-rope deformation.
Feb. 26, 2026
2 min read

Refcotec recently announced the launch of its Refcostix 3400 Mold-Seal, designed as a mold-sealing replacement for typical rope-based material. According to the company, which developed the product, Refcostix Mold-Seal can improve parting-line control, improve casting quality and reduce scrap and rework by removing cope-rope introduced variability.

According to the company, Refcostix 3400 Mold-Seal can conform to irregular cope and drag surfaces while compressing uniformly under cope weight, eliminating common leak paths created when rope compresses in uneven patterns. The product is available in a variety of volumes and can be applied using squeeze bottles, caulking guns, or pumps. Standard viscosity Refcostix 3400 is suitable for small molds, general or bottle application, while high-viscosity Refcostix 3400M is designed to form a thicker head for larger molds, wider parting-line gaps and caulking gun or pump application.

In a statement, Refcotec leadership said the new mold seal can reduce foundry waste.

“By replacing cope rope with a more consistent sealing approach, foundries are seeing meaningful reductions in flashing, cleanup time, and runout-related scrap,” said Matt DeWood, VP of sales at Refcotec. “Those operational gains often translate into substantial cost savings within the first year.”

For more information on Refcostix 3400, see Refcotec’s website.

About the Author

Ryan Secard

Ryan Secard joined Endeavor B2B in 2020 as a news editor for IndustryWeek. He currently contributes to IW, American Machinist, Foundry Management & Technology and Plant Services on breaking manufacturing news, new products, plant openings and closures, and labor issues in manufacturing.