Sylomer® SR 18
Sylomer SR 18 is a very soft mixed-cell polyurethane elastomer from Getzner Werkstoffe for vibration isolation under lightly loaded structures and equipment. Colour-coded orange, it is one of the softest grades in the Sylomer range and is used where low bearing pressures require a very low system natural frequency for effective isolation.
Specifications
- Material: mixed-cell PU elastomer (polyurethane)
- Colour: orange
- Reference specific load: 0.018 N/mm2
- Static range of use: up to 0.018 N/mm2 (approx. 7% deformation)
- Dynamic range of use: up to 0.023 N/mm2 (approx. 18% deformation)
- Load peaks (occasional, brief): up to 0.75 N/mm2 (approx. 80% deformation)
- Static modulus of elasticity: 0.08 N/mm2 at 0.018 N/mm2 specific load
- Dynamic modulus of elasticity: 0.29 N/mm2 at 0.018 N/mm2, 10 Hz
- Mechanical loss factor: 0.23 (per DIN 53513) - highest damping in the standard range
- Rebound resilience: 40%
- Compression set: less than 5%
- Min. tensile elongation at rupture: 230%
- 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 18 is used in lightly loaded isolation systems where achieving a low system natural frequency is the primary objective. Typical applications include floating floor bearings under lightweight timber or steel structures, sensitive laboratory equipment isolation, and acoustic isolation of lightweight machinery where bearing pressures are very low. The high mechanical loss factor (0.23) provides excellent inherent damping relative to other Sylomer grades.
Frequently asked questions
Why choose SR 18 over a stiffer Sylomer grade?
SR 18's very low static modulus of elasticity (0.08 N/mm2) allows it to achieve lower system natural frequencies at light loads than stiffer grades can. This is advantageous when the disturbing vibration frequency is low and maximum isolation efficiency is required.
What is the significance of the high loss factor?
SR 18 has a mechanical loss factor of 0.23, the highest in the standard range. A higher loss factor means more energy is dissipated as heat within the material, reducing resonance amplification and providing better attenuation at near-resonance frequencies.
What load range is SR 18 suitable for?
The static working range is up to 0.018 N/mm2. Load peaks of up to 0.75 N/mm2 are tolerated occasionally. It is not suitable for heavy plant or machinery where bearing pressures exceed this range.
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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FAQs
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.
How long will it take to receive my order?
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.
Is my payment information secure?
Yes, all payments are securely processed through Stripe and are protected under their Terms of Service. AKA Acoustics do not store any payment information ourselves.
How are freight costs calculated?
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.