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Eccosorb® SF-U

THIN, FLEXIBLE, RESONANT ABSORBER

Eccosorb SF-U is a narrow banded, magnetically loaded resonant absorber sheet for free- space applications. These polyurethane rubber sheets are designed to be bonded to flat or curved metallic surfaces to reduce the reflectivity in a narrow band of frequencies. Eccosorb SF-U reflects -20 dB or less of normally incident microwave energy at the design frequency in the range of 1 to 26 GHz.

Features and Benefits

The Eccosorb® SF-U offer a combination of functional and performance-oriented characteristics that make them a reliable choice for demanding applications.

– High mechanical strength
– Easeof bonding
– Excellent abrasion resistance
– Silicone-free

Examples or main applications

The Eccosorb® SF-U are well-suited for integration into a wide range of electronic and industrial systems. Their performance and versatility make them a dependable choice across multiple sectors, supporting both high-volume manufacturing and specialized applications where reliability and efficiency are critical.

– Lining radar nacelles and the exterior of airframes particularly where high power is present.
– Lining of cavity backed and shrouded telecommunication antennas where narrowband performance is required.
– Lining metal surfaces of vehicles to reduce overall radar signature.
– Attaching to masts of ships,walls,etc to reduce reflection sand echoes from nearby antennas.
– Lining magnetron housings to prevent detuning.
– Fabricating into tapered shapes for impedance matchingin waveguide or microstrip applications.
– Lining metal surfaces to attenuate surface currents, suppressing reflections inside microwave modules, and dampening cavity resonances in microwave modules.
– Formodule interference, cavity resonance and surface current problems, ECCOSORB® GDS-U, ECCOSORB® MCS-U and ECCOSORB® BSR-U are recommended due to their high magnetic loss properties, broadband performance, as well as the availability of a wider range of thicknesses (0.010” to 0.100”)

Properties

The Eccosorb® SF-U feature a balanced combination of physical, thermal, and electrical properties, making them suitable for a broad range of technical applications. Each characteristic is validated through industry-recognized test methods to ensure consistency, performance, and compliance with quality standards.

Density Range	2.6 – 4.7 g/cm³
Surface Density Range	3 to 21.5
Tensile strength	2. – 5.5 Mpa
Elongation at break	60–225%
Tear Strength	3.0 to 15 N/mm
Hardness	80 Shore A
Max Service Temperature	120 °C (325 °F)

Product variants

The Eccosorb® SF-U are available in a range of variants designed to meet specific application needs. These versions differ in format, construction, or additional features, providing flexibility in design and optimal compatibility with various systems and assembly processes.

Capabilities & customisation

Industries

AutomotiveCommercial TelecomSecurity and Defense

General Catalogue

Certifications

Request information

Interested in learning more about how the Eccosorb® SF-U can support your project or application? Whether you need technical details, pricing information, or would like to request a sample, our team is here to help. Fill out the form below and we’ll get back to you with the support and solutions you need. Discover how the Eccosorb® SF-U can bring added value to your design and performance requirements.

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The information and technical data provided on this website are for general informational purposes only. While we strive to ensure that all content is accurate, complete, and up to date, we make no representations or warranties of any kind, express or implied, regarding the reliability, suitability, or availability of the information contained herein.

Any reliance you place on such information is strictly at your own risk. We disclaim any liability for errors, inaccuracies, or omissions and for any loss, injury, or damages resulting from the use of the information provided.

Technical specifications, data, or figures may be subject to change without notice. For official, detailed, or binding information, please contact us directly.

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