Isolate It! Sorbothane acoustic and vibration isolation thin
films are versatile anti-vibration pads that can be used on many
different applications. The unique Sorbothane ultra-soft urethane
is a durable, resilient, polymer that provides outstanding
vibration isolation and non-skid properties. Sorbothane isolators
help absorb impact and noise and have excellent resistance to
aging; they will not harden or crack over time. They feature a
smooth, clean, black urethane surface. Use them on any audio and
electronic equipment to prevent skipping and interference.
More is not better. A large lightly loaded sheet will have a high
spring rate and will not deflect enough to provide good
isolation. Over compression will lead to short service life. The
proper compression range is 3 to 20 per cent depending on the
"Shape Factor." Shape factor is the ratio of contact surface (one
side) divided by perimeter area. Geometry matters. Small circular
pieces and rings "bulge" better than squares and rectangles.
"Bulgeability" makes for better isolation. Use many small discs
rather than a few large rectangles for best vibration isolation
performance. Thickness matters. The thicker the sheet the lower
the natural frequency. You need a sheet at least one-inch thick
to get your natural frequency down to 10 Hertz. (10 Hertz is your
target natural frequency for a 900 RPM motor.) Use the natural
tackiness of Sorbothane or apply 3M #80 Spray adhesives to glue
the Sorbothane to metal, plastic and other surfaces. This sheet
is perfect for cutting to meet the needs of special applications
or can be used whole. Can be but using a sharp utility knife or
scissor. Apply sheet as a whole or use to coat the inside of
speakers or equipment housings to provide sound insulation. 1 cm
of Sorbothane can isolate up to 40 dB of sound
Caution: This product contains plasticizer which may cause minor
discoloration to wood, plastic, composite and other materials
following prolonged contact.
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Isolate It!: Sorbothane Acoustic & Vibration Damping Film 50 Duro (0.10 x 6 x 12in)