Saint-Gobain Seals

Marathon Diaphragms

Marathon Pumps and V Valves

Marathon® Diaphragms

With over 45 years of experience in the design and fabrication of specialty diaphragms and PTFE components for pumps, Saint-Gobain Performance Plastics has grown to become a leader and a trusted supplier to the world’s most respected OEM diaphragm valve and Air Operated Diaphragm (AOD) pump manufacturer. 


Our team of highly skilled professionals works closely with our customers by applying extensive materials knowledge and manufacturing expertise to generate customized solutions for even the most challenging applications.  Pumps and valves are abrasion resistant, offer low friction and wear, and are compatible with a broad range of chemicals.  Operating temperatures range from -400 to 536°F (-240 to 280°C).


For AOD –Pumps we offer complete in-house tooling design and fabrication, advanced CNC machining techniques, as well as compression and injection molding capabilities, in order to meet the tightest of specifications.  With our meticulous lot traceability and detailed testing protocol, including a 23-station diaphragm pump testing laboratory, optimization of the design and performance of each diaphragm or pump component we manufacture is ensured.


For Valve Diaphragms we offer complete, in-house part and tooling design, as well as highly skilled and experienced personnel for production in a Class 10000 clean room environment. Our testing facilities are state-of-the-art and additional services offered by our laboratory and R&D departments complete our expertise in the development, design, and manufacturing of valve diaphragms.  


Typical Applications

  • Chemical processing
  • Biotech
  • Semiconductor
  • Food processing

  • Water purification
  • Pharmaceutical
  • Pumps
  • Valves



Product Solutions

Designs and Materials

Features and Benefits

Marathon Pumps
Marathon® AOD and
Pump Diaphragms




Materials include:  PTFE, Santoprene®, Acetal, Polyimide, Modified PTFE, Geolast®, Fluoroloy®, PEEK, UHMW

  • Diaphragm design optimization

  • Complete in-house tooling design and fabrication

  • Pump component testing laboratory

  • Prototype to production quantities

  • Complete lot traceability

  • Near-net shape compression molding

  • Injection molding

  • CNC machining (lathe/mill)

  • Automatic and CNC screw machines

Marathon V Valves
Marathon® V Valves 





Materials include: choice of proprietary materials, special quality virgin PTFE, TFM™


  • Standard and high purity versions available
  • Chemically inert and temperature resistant
  • Great flex life and durability
  • Manufactured in cleanroom conditions
  • Long lasting construction means less replacement
  • TFM™ best suited for applications including steam
  • Complete in-house designing, diaphragm and tooling