Macherey-Nagel GmbH

 

New Pharma-Fix = 20 mm crimp closure with Silicone/PTFE 

Extremely tight sealing and excellent analytical purity are of great importance, especially in the headspace area, since high tem-peratures are often used here. Since completely PTFE-coated liners have a very slippery surface on the glass rims, the sealing properties can be significantly improved by a PTFE lamination that is only applied centrically in the contact area with the sample.
With these so-called Pharma-Fix septas, the uncoated, elastomeric septa rim is on the glass crimp neck of the vial. As a molded liner the side edges of these liners are designed lamellar so that they can be well compressed during the crimping process and be firmly pressed onto the glass rim.
Until now, such special liners were only available as a butyl / PTFE version, which, however, could only be used in a temperature range of -40 °C and 120 °C. Furthermore, butyl is more difficult to penetrate than the much softer silicone and its analytical purity is not as high.
We would like to set new standards in the headspace area and therefore introduce a center hole closure with a so-called silicone / PTFE Pharma-Fix liner, which is characterized by high analytical purity and high temperature resistance (-60 °C up to 200 °C), good penetration properties and excellent sealing. In addition, we will offer the closure at permanently attractive pricing so that everyone can benefit from the advantages of this closure.