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Pharmaceutical production creates several challenges when it comes to effective sealing solutions, with contamination often a primary concern. This is a particular problem if aggressive or toxic chemicals are involved which can potentially react with sealing materials. To compound the problem, glass or glass-lined vessels may be used. Cleaning with pressurised steam can also have an impact on seal performance.
All these issues have a bearing on appropriate seal selection. Get it wrong, and premature seal degradation can result in undetected leaks, jeopardising health and safety and contaminating the production process. We manufacture EC1935 certified, FDA approved chemical compatible materials.
Our Sigma® PTFE range of products is suitable for virtually all media and flange types. The result is a reliable, secure seal that requires minimum assembly stress for use in load compromised joints.
Sigma® 500 is a high performance biaxially orientated sheet sealing material containing PTFE and hollow glass microspheres.
Sigma® 511 is a high
performance biaxially
orientated sheet sealing
material containing
PTFE with silica filler.
Sigma® 533 is a high
performance biaxially
orientated sheet sealing
material containing PTFE
with barium sulphate
(barytes) filler.
Sigma® 588 is a high performance biaxially oriented PTFE sheet sealing material with enhanced handling and low stress sealing characteristics.
Sigma® 600 is a high performance biaxially orientated PTFE sheet sealing material with enhanced, low stress sealing characteristics.
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