The two most common types of silicone tubing used in peristaltic pumps and systems are peroxide cured tubing and platinum-cured tubing. While both types of tubing have been popular choices throughout the past few decades, platinum cured silicone tubing has taken the lead as the number one choice in several industries.
Both tubing styles are preferred over older tubing systems because they are more reliable for use in peristaltic pumps in industries where high purity is demanded. While both curing methods for silicone tubing offer benefits to various industries, platinum curing has gained an edge in recent years amongst industries where high purity is particularly vital.
The platinum curing process involves the combination of two ingredients to complete the curing process. Also known as addition curing, platinum curing systems generally use vinyl-functional polymers combined with a platinum catalyst to cure the silicone tube. The chief benefit of the process itself is the lack of by-products from the combination of ingredients during curing. The result is a silicone tube with little to no by-products in the final polymer that can leach into the fluids traveling through the tube.
Chemistry aside, the platinum curing process provides a consistent end product time and again. On top of that, platinum cured tubes have a clear finish compared to the more opaque finish on peroxide cured tubing. While the consistent finish and final appearance of platinum tubes is advantageous, performance characteristics are even more critical.
Platinum cured silicone products offer greater tensile strength, elongation, and tear strength, all of which translate to a longer life span for the product. Additionally, platinum cured products offer advantages such as durability through a wide working temperature range (-80 degrees F to 420 degrees F), choice of durometer from 20 to 80 Shore A, biocompatibility, and a high dielectric strength.
For these reasons, platinum cured tubes have become vital in the medical and pharmaceutical industries in particular. A number of medical device manufacturers, for example, use this type of silicone tubing when extended contact with tissues and bodily fluids is necessary.
Contact us for more information about the benefits of our pharmaceutical grade platinum cured silicone tubing. We will help you analyze your tubing needs and determine the compatibility of platinum-cured tubing with your operations. Additionally, we can analyze other pertinent factors such as dimensional tolerances and proper hose fittings.