Sodium Tripolyphosphate, also known as STPP, is a common chemical used in a variety of industrial applications. It is often used as a cleaning agent, a food additive, and a buffering agent. In the rubber industry, it is used as a dispersing agent and a stabilizer.
When rubber is exposed to sodium tripolyphosphate, it can suffer from premature failure due to the chemical's corrosive properties. In addition, the chemical can cause embrittlement, swelling, and cracking of the rubber material, resulting in a decreased lifespan of the rubber product. Furthermore, it can cause the rubber to become discolored, resulting in a diminished aesthetic appeal.
EPDM o-rings, or ethylene propylene o-rings, are a family of synthetic elastomers with lower cost steam and chemical resistance, particularly for applications involving solvents, acids and other mild chemicals. Marco Rubber has the world’s largest inventory network of EPDM o-rings and made on demand custom manufacturing often without tooling fees, so the EPDM o-rings you need are always available. Whether it’s for water systems, braking systems, medical, pharmaceutical, food or dairy use, you can count on Marco Rubber to deliver your o-rings fast and efficiently.
View some of our other material compatibility ratings with SODIUM TRIPOLYPHOSPHATE. If you don't see what you're looking for or need more guidance, our team of experienced sealing design engineers can help select the best sealing products and material for your specific application.View Full Chemical Compatibility Guide