Sylodyn® NB
Sylodyn NB is a closed-cell polyurethane elastomer bearing and isolation material from Getzner Werkstoffe, designed for lightweight vibration isolation applications. It carries the lowest static load rating in the standard Sylodyn range (up to 0.075 N/mm2) and excels at isolating low-frequency vibration in floors, ceilings, walls, and sensitive equipment supports.
Specifications
- Material: Closed-cell PU elastomer (polyurethane)
- Colour: Red
- Static range of use: Up to 0.075 N/mm2 (approx. 8% deformation at shape factor 3)
- Dynamic range of use: Up to 0.120 N/mm2 (approx. 18% deformation)
- Load peaks (occasional, brief): Up to 2.0 N/mm2 (approx. 70% deformation)
- Static modulus of elasticity: 0.75 N/mm2 at specific load of 0.075 N/mm2
- Dynamic modulus of elasticity: 0.85 N/mm2 at specific load of 0.075 N/mm2, 10 Hz
- Static shear modulus: 0.12 N/mm2 at pretension of 0.075 N/mm2
- Dynamic shear modulus: 0.17 N/mm2 at pretension of 0.075 N/mm2, 10 Hz
- Mechanical loss factor: 0.07
- Rebound resilience: 70% (EN ISO 8307)
- Compression set: Less than 5% (EN ISO 1856, 50% deformation, 23 degrees C, 72 h)
- Compression hardness: 0.09 N/mm2 at 10% linear compression, 3rd load cycle
- Coefficient of friction on steel: 0.7 (dry, static)
- Coefficient of friction on concrete: 0.7 (dry, static)
- Coefficient of friction on wood: 0.5 (dry, static)
- Thermal conductivity: 0.07 W/(mK)
- Temperature range: -30 degrees C to 70 degrees C
- Flammability: Class E (EN ISO 11925-2, EN 13501-1)
- Standard sheet dimensions: Roll 1.5 m wide x 5.0 m long; strip up to 1.5 m wide x 5.0 m long; thickness 12.5 mm or 25 mm
Applications
Sylodyn NB suits applications carrying light static loads combined with a need for effective low-frequency vibration isolation. Typical uses include floating floor underlays, acoustic decoupling of walls and ceilings, bearing pads under lightweight machinery and sensitive equipment, and impact noise insulation in residential and commercial construction. Punched and moulded parts are available on request.
Standards and compliance
Flammability classified to class E per EN ISO 11925-2 and EN 13501-1. Compression set tested per EN ISO 1856. Load deflection curves recorded per ISO 844. Material properties are determinable via the Getzner FreqCalc online calculation program (registration required).
Frequently asked questions
What distinguishes Sylodyn NB from higher grades such as NC and ND?
Sylodyn NB has the lowest static load rating in the range (0.075 N/mm2), giving it the softest spring characteristics. Higher grades (NC, ND, NE, NF) carry progressively greater loads and are chosen when the supported structure is heavier.
Is Sylodyn NB water resistant?
Yes. The closed-cell pore structure means the material does not absorb water, making it suitable for wet-area or below-grade installations.
What forms and sizes are available?
Standard supply is as rolls (1.5 m x 5.0 m) or strips in thicknesses of 12.5 mm and 25 mm. Custom punched and moulded parts are available on request.
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.