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Ring support

The ring support (also well known as back up ring) is usually applied in high-pressure applications. When the pressure in the application is higher than 70 bar, it is recommendable to use a ring support besides the o-ring or quad ring to prevent extrusion. Ridderflex excels in the production of customised products and we can manufacture your back up ring completely custom-made.

We produce both endless solid rings as well as split rings. With split rings, we make a cut at a 45-degree angle. In this way, the support ring can be mounted in endless constructions.

Customised ring support

For over 25 years, Ridderflex has been a specialist in machining custom-made ring supports. According to your specifications, based on a drawing or model.

Are you interested in a custom-made support ring? Please call +31 (0) 180 46 34 71 or send an e-mail to

Nylon, PEEK or PTFE back up ring

Ridderflex machines back up rings from materials that are harder than the o-ring itself. The most commonly applied plastic for back up rings is Nylon, because this material is hard and very stable. Do you have a more critical application? PEEK is better temperature resistant and can endure much higher surface pressures. The PTFE back up ring (if required with additives such as glass or carbon) has the most universal usability, amongst others because of its good temperature resistance. In the table below we will explain the key properties of our most frequently used plastics for ring supports. We are happy to advise you about the possibilities.

Nylon (PA)Nylon (PA) has a high mechanical strength, rigidness and impact strength. The material also has a high wear resistance, a high electrical insulating capacity and a high absorption of moisture.
PTFEPTFE virgin (PTFE Teflon ®) is physiologically inert and may be used in direct contact with food (FDA). The material excels because of its wide temperature range and good resistance. PTFE virgin has a good chemical resistance and has very low friction.
PEEK (polyetheretherketone)PEEK has a very high pressure resistance, temperature resistance and tensile strength. It is also creep resistant and the material has a very good chemical resistance. PEEK is good resistant to electromagnetic and particles radiation, such as: beta radiation, gamma rays and infrared radiation. We apply PEEK mainly for ring supports in critical conditions. Or in applications for the food industry: PEEK has an FDA approval.

Are you interested? Please contact us!

More plastic machine parts

  • Bush bearing

    Bush bearing

    Custom-made bush bearings. PE, POM or Nylon. Higher bearing grades: PTFE, PEEK PVX, PEEK PTFE, PEEK Arlon 1555 ® or Vesconite ®.

  • Track roller

    Track roller

    Customised plastic track rollers (self-lubricating). Standard in POM and Nylon. Also in PEEK for critical applications.

  • PTFE envelope gasket

    PTFE envelope gasket

    Different types according to standard sizes for flanges. Our specialists are happy to help you by choosing the right inlay material.


ISO including co-engineering

Ridderflex complies with international quality management requirements. We are now also certified for co-engineering – our strength – . Read more


Any questions about products or make an enquiry? Simply call us or send us an e-mail. +31 (0) 180 46 34 71