Approvals & Certifications

Approvals Certifications

Approvals & Certifications for Potable Water & Sanitary

Seal materials which comply with industry regulations

The materials we use in our seals meet a wide variety of industry regulations, while providing tried and tested performance under manufacturing conditions and stringent cleaning regimes. Working at the forefront of standard development within a number of regulatory committees enables us to quickly adapt to new developments and provide our customers with a competitive edge.

 Our seal materials comply with the following certifications and authorities:

  • Deutsches Institut für Normung (DIN) EN 549 and EN 14241-1 (Germany): Sets standards for rubber materials for seals and diaphragms used in gas appliances, gas equipment and flue systems.
  • Deutscher Verein des Gas- und Wasserfaches e.V. (DVGW) W270 (Germany): Sets tests for microbial growth enhancement of non-metallic materials In contact with drinking water.
  • Umweltbundesamt (UBA) KTW (Germany): Includes a list of approved starting elastomers, test methods and limits for values obtained.
  • Food & Drug Administration (FDA) CFR 177.2600 (USA): Sections cover requirements for many different polymeric materials, such as section 2600 for rubber materials, in which “positive lists” describe the allowable substances and limitations as well as extraction tests.
  • National Science Foundation (NSF) ANSI 61 (USA): Defines the levels of contaminants and impurities that can be leached from elastomer components.
  • Water Regulations Advisory Scheme (WRAS) BS 6920 (UK): Two tests related to odor, flavor and taste of water and three tests that examine leachable chemicals and growth of microorganisms.
  • Ministerial Decree 174 (DM-174) (Italy): A white-list of elastomer materials for base compounding and tests, including leachable contaminant migration and immersion testing.
  • Bundesministerium für Gesundheit ÖNORM B 5014-1 (Austria): Testing regimes and requirements for products in contact with drinking water, and a list of pre-approved materials.


  • Ethylene Propylene Diene Monomer (EPDM)
  • Fluoroelastomer (FKM)
  • Nitrile Butadiene Rubber (NBR)
  • Hydrogenated Nitrile Butadiene Rubber (HNBR)
  • Isolast® Perfluoroelastomer (FFKM)
  • Silicone
  • Turcon® Polytetrafluoroethylene (PTFE)
  • Zurcon® Polyurethane (PUR)
  • HiMod® High Modulus Plastic
  • Orkot® Composite Bearings


  • FDA, KTW, WRAS, ACS, NSF 61, W270, DIN EN 14241-1
  • FDA, NSF 61, DIN EN 14241-1, DIN EN 549
  • FDA, KTW, WRAS, ACS, NSF 61, W270, DIN EN 549
  • FDA, DIN EN 549
  • FDA
  • FDA, KTW, WRAS, ACS, NSF 61, W270, DIN EN 549
  • FDA, KTW, WRAS, W270
  • FDA
  • FDA, KTW, WRAS, W270
  • FDA