Back-Up Rings

reduce the sealing gap between two components, protect the sealing element (e.g. an O-ring) and thus increase its service life. Depending on the application, we provide different shapes and materials.

Back-Up Rings

Back-up rings reduce the sealing gap between components and thus prevent damage to the seal due to gap extrusion. They are used together with O-rings as well as other sealing elements. Their use extends the service life of the seal. Back-up rings are used for higher pressures, pulsating pressures or larger sealing gaps. They are also used in the case of vibrations and higher speeds as well as higher operating temperatures and in cyclical applications.

Back-up rings can be manufactured serially in various profile geometries in PTFE, POM, PA and, for special applications, also in PEEK, PET, PCTFE, PTFE compounds, etc. Standard and special dimensions are also available in elastomer materials. In a concave design, the O-ring is centred in its installation position, and can thus be subjected to higher loads. A trapezoidal back-up ring design is chosen for higher pressure loads and larger sealing gaps. Back-up rings can also be supplied in a slotted design to facilitate installation.

Back-Up Ring EE0

Back-up ring, one layer, continuous. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -100 °C / +200 °C
Standard Material: PTFE

Back-Up Ring ES0

Back-up ring, one layer, slotted. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -100 °C / +200 °C
Standard Material: PTFE

Back-Up Ring EE1

Back-up ring, one layer, continuous, concave. The shape of the O-ring is retained approximately, as a result of which higher stresses are possible. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -100 °C / +200 °C
Standard Material: PTFE

Back-Up Ring ES1

Back-up ring, one layer, slotted, concave. The shape of the O-ring is retained approximately, as a result of which higher stresses are possible. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -100 °C / +200 °C
Standard Material: PTFE

Back-Up Ring EE2

Back-up ring, trapezoid, one layer, continuous, for external sealing applications. Trapezoid back-up rings reduce the sealing gap with their shape and permit higher system pressures. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring ES2

Back-up ring, trapezoid, one layer, slotted, for external sealing applications. Trapezoid back-up rings reduce the sealing gap with their shape and permit higher system pressures. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring EE3

Back-up ring, trapezoid, one layer, continuous, for internal sealing applications. Trapezoid back-up rings reduce the sealing gap with their shape and permit higher system pressures. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring ES3

Back-up ring, trapezoid, one layer, slotted, for internal sealing applications. Trapezoid back-up rings reduce the sealing gap with their shape and permit higher system pressures. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring EE4

Back-up ring, one layer, continuous, inside chamfer. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring ES4

Back-up ring, one layer, slotted, inside chamfer. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring EE5

Back-up ring, one layer, continuous, outside chamfer. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring ES5

Back-up ring, one layer, slotted, outside chamfer. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring EE6

Back-up ring, one layer, continuous, concave, inside chamfer. The shape of the O-ring is retained approximately, as a result of which higher stresses are possible. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring ES6

Back-up ring, one layer, slotted, concave, inside chamfer. The shape of the O-ring is retained approximately, as a result of which higher stresses are possible. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring EE7

Back-up ring, one layer, continuous, concave, outside chamfer. The shape of the O-ring is retained approximately, as a result of which higher stresses are possible. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring ES7

Back-up ring, one layer, slotted, concave, outside chamfer. The shape of the O-ring is retained approximately, as a result of which higher stresses are possible. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -50 °C / +100 °C
Standard Material: POM

Back-Up Ring SP1

Back-up ring, spiral shaped, for internal sealing applications. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -100 °C / +200 °C
Standard Material: PTFE

Back-Up Ring SP2

Back-up ring, spiral shaped, for external sealing applications. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -100 °C / +200 °C
Standard Material: PTFE

Back-Up Ring EEP

Back-Up Ring EEP, endless, concave, measures for combination with o-rings according to ASA 568. Other materials are available for very high or very low operating temperatures (see PDF Catalogue or contact our application engineers).

Application Range

Temperature: -55 °C / +110 °C
Standard Material: NBR

Contact

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Tel: +49(0)201 86606-0

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