Sylomer® SR 220
Sylomer SR 220 is a mixed-cell polyurethane elastomer from Getzner Werkstoffe for medium-to-high load vibration isolation. Colour-coded red, it sits in the upper-mid section of the standard Sylomer range and is used to isolate plant, machinery, and building structures where bearing pressures approach 0.22 N/mm2.
Specifications
- Material: mixed-cell PU elastomer (polyurethane)
- Colour: red
- Reference specific load: 0.22 N/mm2
- Static range of use: up to 0.22 N/mm2 (approx. 10% deformation)
- Dynamic range of use: up to 0.35 N/mm2 (approx. 20% deformation)
- Load peaks (occasional, brief): up to 4.0 N/mm2 (approx. 65% deformation)
- Static modulus of elasticity: 1.47 N/mm2 at 0.22 N/mm2 specific load
- Dynamic modulus of elasticity: 2.58 N/mm2 at 0.22 N/mm2, 10 Hz
- Static shear modulus: 0.38 N/mm2 at pretension of 0.22 N/mm2
- Dynamic shear modulus: 0.57 N/mm2 at pretension of 0.22 N/mm2, 10 Hz
- Mechanical loss factor: 0.13 (per DIN 53513)
- Rebound resilience: 55%
- Compression set: less than 5%
- Min. tensile stress at rupture: 1.20 N/mm2
- Min. tensile elongation at rupture: 170%
- Temperature range: -30 degrees C to 70 degrees C
- Flammability: class E per EN ISO 11925-2 (EN 13501-1)
- Standard dimensions: 12.5 mm or 25 mm thick; rolls 1.5 m wide by 5.0 m long; strips up to 1.5 m wide and 5.0 m long
- Custom dimensions: punched and moulded parts available on request
Applications
SR 220 is suited to floating floor systems, mechanical plant isolation, and rail track bearings where design loads fall around 0.22 N/mm2. Its combination of moderate stiffness and a loss factor of 0.13 makes it appropriate for isolating structure-borne noise from HVAC equipment, compressors, and similar plant in commercial and industrial buildings.
Frequently asked questions
How does SR 220 compare to SR 110?
SR 220 has double the reference specific load (0.22 N/mm2 versus 0.11 N/mm2), a higher static modulus of elasticity (1.47 N/mm2 versus 0.83 N/mm2), and a higher dynamic modulus. It is suited to heavier loads and will produce a higher system natural frequency for the same bearing thickness compared with SR 110.
What thickness options are available?
Standard thicknesses are 12.5 mm and 25 mm, supplied as rolls 1.5 m wide by 5.0 m long or as strips. Punched and moulded parts are available from Getzner on request.
What load peaks can SR 220 tolerate?
The datasheet specifies load peaks of up to 4.0 N/mm2 for occasional, brief loading, well above the sustained dynamic range of 0.35 N/mm2.
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
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What is your return policy?
All refunds and returns are determined by the manufacturer's terms of sale. Change-of-mind refunds are not accepted, but all valid warranty claims will be managed by AKA Acoustics in compliance with consumer law.
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Freight lead times will be provided upon order confirmation. Standard items typically ship within 4–6 weeks, while custom orders may take 6–12 weeks.
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Freight costs are determined at the time of quotation to ensure accurate pricing based on your specific order. For any questions, please email sales@akaacoustics.com
How can I contact support?
For account inquiries, email accounts@akaacoustics.com. For order support, email sales@akaacoustics.com.