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  1. pg11

    Compression set testing of thin (2mm) rubber section

    Can realistic compression set tests at 25% deflection be carried out on thin sections of molded elastomers, EPDM in particular. The sections in question are approx 2mm thick with a tolerance of 0.1mm. Layering or building up to thicker sample is not being used. If such testing is valid how would...
  2. pg11

    Silicone part production

    S. K. Polymer Company Limited , a Thailand rubber manufacturer,have been manufacturing and exporting custom moldings in most polymers , including silicone, for many years. Please visit http://www.skthai.com for an overview. Regards Peter Goodwin
  3. pg11

    Thermally and Electrically Conductive Rubber

    Incorp[orate a conductive channel black.
  4. pg11

    FDA / ASTM Cure Date Requirments

    Shelf life of rubber products is very dependent on storge conditions and temperatures. Ideally the components should be stored in a dark, cool storage area. Different polymers have different storage life and subsequent changes in physical properties. The ASTM heat ageing methods are probably as...
  5. pg11

    Cryogenic Deflashing

    There are many suppliers of maodern cyrogenic deflashing machines which are suitable for silicone and other polymers. Search the web using cyrogenic deflashing and I am sure that you will find your answers. Regards Peter Goodwin
  6. pg11

    Bonding?

    Bond failure can be caused by a variety of things such as improper treatment of the metal surface etc. I suggest you contact Chemlock as to the bonding agents that you should be using as you don't mention your method of bonding. Regards Peter Goodwin
  7. pg11

    Materials for membranes in FDA material

    You should consider using Silicone or even Viton , more expensive but cost effective because of reduced downtimes. For silicone contact GE or Shin Etsu and for Viton, Dupont. Both suppliers provide a full technical service. Regards Peter Goodwin
  8. pg11

    Knitting & nitrile

    Visit the Dupont web site and you will find a wealth of information regarding Nirile. Knitting can be a problem depending on the grade of Nitrile and what plasticizers are used etc.
  9. pg11

    Materials for membranes in FDA material

    To develop the best solution to this problem it is neccessary to know the full details of the service conditions, operating temperature, maximum temperature reached, what flows through the valves etc. EPDM is not a particularly good diaphragm material.
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