Ring support

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.

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.


PTFE 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.

Ring support

Question? Enquiry?

We excel in the production of custom-made plastic, rubber and polyurethane products.

+31 180 46 34 71 sales@ridderflex.nl

Please note! Only Business-to-Business. For new customers we set a minimum order amount of € 1.000,00 ex. VAT and shipping.