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  1. Fritsche

    NSF approval

    I am looking for either fineshed o-rings or for finished compound ready to make o-rings from. As far as I have gotten now, some producers come up on the nsf homepage with o-rings - but when we ask them they either not reply or they denie having the approval.
  2. Fritsche

    NSF approval

    We are being more and more asked for NSF approval on o-rings and moulded parts - but we have difficulties in finding suppliers that have their compounds approved. Does anyone know a good way to find compound that holds approval ? We have been in contact with Rhodia and Shin-Etsu, but they dont...
  3. Fritsche

    Materials for membranes in FDA material

    The diaphrams are used in diaphram valves in both the food lines containing milk, and in pharmaceutical lines with raw materials for enzyme production, as well as a lot of other media, where one does not want to have media contamination due to for example using a ball valve. The medias...
  4. Fritsche

    Materials for membranes in FDA material

    We are often asked to improve on the diaphrammaterials used in for example Alfa Laval Saunders diaphramvalves. Have anyone got experience in replacing the EPDM rubbers with other materials. The problem is that the EPDM cracks/hardens - and they have to replace the diaphrams every 10 - 12 weeks...
  5. Fritsche

    Rubbers and milk fat

    Have heard from several sources, that new materials have to replace EPDM for milk fat lines in production. The problem should be contamination. Does anyone know more in detail what materials that could replace (a problem is also sterilisation at 141 degrees C). Does anyone have links to people...
  6. Fritsche

    silicone rubber sheet

    Contact Gordon Neale at Primasil, he will be able to help out in all kinds of silicone. The email adress is gordonn@primasil.com

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