Benefits of Platinum Cured Silicone Tubing for Peristaltic Pumps

Clear Silicone Tubing

For over 40 years now silicone tubing has increasingly become the go-to option for use in peristaltic pumps by the medical, pharmaceutical, and biotech industries around the world. Numerous industries that used to rely upon stainless fluid path tubing have begun switching to silicone tubing in droves, and the reasons are simple.

First and foremost, silicone tubing offers improved safety for equipment, personnel, and clients. Silicone tubing has greater leach-resistance compared to alternative tubing options, preventing plasticizers or other additives from escaping and resulting in toxicological issues. Additionally, silicone tubing is extremely flexible and kink and tear resistant, making it an ideal partner for any peristaltic pumping system.

The two most common types of silicone tubing used in pump 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.

Why Platinum Cured Tubing?

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.

Choice not Always Clear Cut

Silicone tubing’s highly flexible nature makes it ideal for aseptic fluid transfer, peristaltic pumping, and filling operations. However, while the end product of the platinum curing process might be clear, but the decision on which tubing type to go with is not always so clear cut.

Contact us for more information about the benefits of our pharmaceutical grade platinum cured silicone tubing. We can help you analyze your tubing needs to 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 such as 316 stainless steel fittings.