Elasto Proxy's Sealing Solutions Blog Blog

Elasto Proxy's Sealing Solutions Blog

Elasto Proxy's Sealing Solutions Blog is the place for conversation and discussion about the design and manufacturing of rubber and plastic parts and products. In addition to regular content from Elasto Proxy, you'll hear from companies across the rubber and plastics industry.

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Cryogenic Deflashing for Molded Silicone Parts

Posted December 01, 2019 4:55 PM by Doug Sharpe

Cryogenic deflashing for molded silicone parts removes flash for improved appearance and performance. Mold flash is often a cosmetic defect, but silicone molders want to avoid the appearance of surface imperfections that suggest poor quality. With parts such as silicone gaskets or O-rings, flash that affects a part’s surface finish can interfere with proper sealing. The causes of flash are numerous, but molders and manufacturers who use cryogenic deflashing can achieve consistent, high-quality results.

Silicone mold flash can be trimmed by hand, but manual deflashing is labor-intensive and time-consuming. Hand trimming is also inconsistent since different workers may achieve different results. There can even be part-to-part differences by the same worker during the same shift. Outsourced deflashing might seem expensive, but cryogenic deflashing is an automated, computer-controlled batch process that can save silicone molders and manufacturers time and money.

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