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Silicone Diaphragms

ASEPCO’s Silicone Diaphragms

Patented Weirless Radial-Diaphragm™ Valve Design

Silicone DiaphragmFeatures & BenefitsSpecificationsDatasheet & Resources
Viton Diaphragms Image
Medical-grade, platinum-cured Silicone is widely accepted in pharmaceutical and biotech applications and is often used throughout the plant. Like all of our diaphragm materials, our Silicone diaphragms meet USP Class VI and FDA 21 CFR 177.2600 standards. We provide two different finishes with our Silicone diaphragms. The first, and most common, is our white diaphragm, which is made with Q7-4765 and 0.25% titanium dioxide. The other is clear with no titanium dioxide. To get specific chemical compatibility information about Silicone and other elastomers, we suggest that you refer to the Cole-Parmer Chemical Compatibility Database. To get more information about silicone, look at some of the suggested resources on the Datasheet & Resources tab. Benefits of this material:  

  • Low cost
  • Physical resilience
  • Has a very small change in dynamic characteristics over a wide range of temperatures
  • Recommended temperature range (-60 to 275°F / -51 to 135°C)

Weaknesses of this material:

  • Has only moderate chemical resistance
  • Has a tendency to tear, especially in constant steam and actuation
Diaphragm in cutaway of valve with callouts pointing out the 3 seals
  • All diaphragms meet USP VI standards and are FDA CFR 177.2600 compliant
  • Valve assembles with hygienic clamp and no tools
  • Three seals formed with valve body
  • Behind-the-seat flow path
  • Meets the standards for quality, purity, lack of toxicity, strength, and consistency
  • Suitable for biomedical/pharma applications
  • Diaphragm can be changed extremely quickly with little training
  • No need for re-torquing after use
  • Minimizes contamination and dead legs
  • Allows complete flushing of the valve chamber
ASEPCO provides diaphragms created with a number of different materials. The materials vary with respect to heat-resistance, chemical-resistance, and durability. The table below shows basic compatibility information. Please do not use this information as your sole method for determining whether an elastomer is right for your specific process. Before using any elastomer in a process you should verify its compatibility with an elastomer expert.
Diaphragm specifications and availability tables
For a printable version of this web page that includes the product information, features & benefits, specifications, and illustrations, download the PDF.

pdf-download-icon ASEPCO Diaphragms Datasheet

We specialize in customization. Please contact our Customer Service Department for any non-standard product requirement (800) 882-3886.