This was sent to me from sorbothane. www.sorbothane.com They recomend getting it from McMaster Carr. Sorbothane is pour cast at room temperature. Therefore tooling for custom parts is relatively economical: $400-$1200 USA. Parts of your design can be made at our factory. ------------------------------------------------------------ ----- If you wish help in sizing a vibration or shock application then please provide via e-mail, fax or surface mail: - the weight of the item to be isolated - the number of support points for its load - the excitation frequencies (motor rpms, electrical frequency [normally 50 or 60 Hz], other vibratory devices) - the shock isolation requirements - a sketch of the item to be isolated ------------------------------------------------------------ ----- Sorbothane Chemical Resistance: Sorbothane shows good chemical resistance to kerosene, diesel, motor oil and hydraulic fluid using the ASTM D-543 7-day immersion test. Sorbothane is not recommended for long-term exposure to gasoline. Sorbothane is not recommended for long-term immersion in water or alcohol. ------------------------------------------------------------ ----- Sorbothane Colors Standard colors are black, gray, blue, red, flesh and orange. There is no extra charge for standard colors. However, some standard colors may be poured as seldom as once every six weeks. This may be a consideration on your delivery. For special colors there are two possible extra expenses: a set up charge and a pigment charge. If a special color is made by mixing standard colors then there is no pigment charge. There is only a set up charge of about $400 per order. If a special color requires purchase of a non-stock pigment then there is also a pigment charge. The pigment charge can be up to $1000 depending on the pigment selected. In addition, the minimum order would be for about 500 pounds of Sorbothane. ------------------------------------------------------------ ----- Joining Sorbothane to other materials: 1. The Pressure Sensitive Adhesive (PSA) we use is Fasson Fastape "A." 2. For rigid joints Sorbothane may be bonded using cyanoacrylates ("crazy glues" including Loctite 401, 409, 447, 454, etc.). 3. For a slower set time another cyanoacrylate, Tyrite HG7650, can be used. For applications with metals Sorbothane recommends Chemlock 210 or 213 as a primer on the metal for a stronger bond. 4. "Probond," a single part polyurethane glue by Elmer's Products, Inc. forms an excellent bond with primed metal. Cure time may exceed 24 hours. 5. Two-part polyurethane glues can be used to bond to metals or other adhesives. 6. Neoprene-based adhesives can be used to bond to rubbers and other plastics. 7. "Duco Cement" provides a good, flexible bond of Sorbothane to Sorbothane. 8. Sorbothane can be bonded to fabrics and open-pore plastic sheeting directly at casting without glues. Sorbothane has substantial experience casting threaded inserts in parts for screw-type connections. ------------------------------------------------------------ ------ Sorbothane Texture New Sorbothane has a unique tacky feel to it. It will decline somewhat with time but not a great deal. The softer the Sorbothane, the more pronounced is the tacky feel. For many application this is an advantage ? No glue required, inherently non slip. Post production applications can reduce tackiness where desired: 1. Cheapest is sprinkle on talcum powder. Reapply as required. 2. Coat with a clear urethane paint without toluene. 3. Vacuum deposit Parylene, a proprietary chemical used in electronics and aerospace applications. This is an outstanding solution where improved chemical resistance is required. This material has a low co-efficient of friction-- good for products undergoing thermal expansion and contraction. ------------------------------------------------------------ ------ Sorbothane Hardness Like many materials Sorbothane surface hardness is rated using the Shore Durometer Scale. However, since Sorbothane is softer than most other materials it uses a different Shore Durometer Scale. Sorbothane is rated using the Shore "00" Scale. Most rubbers, neoprenes and silicones are rated using the Shore "A" Scale. 70 on the Shore "00" Scale is only 20 on the Shore "A" Scale. Standard hardness ratings for Sorbothane are 30, 50 and 70, Shore "00". ------------------------------------------------------------ ------ Painting Sorbothane Some customers have painted Sorbothane. However, we have no information on appropriate paints or durability. ------------------------------------------------------------ ------ Operating Temperatures Sorbothane works successfully between 0 and 160 degrees Fahrenheit. Below 0 degrees is becomes progressively harder (less able to isolate vibration) until it reaches its lower operating limit at -40 degrees Fahrenheit. >From 160 degrees to 200 degrees Fahrenheit Sorbothane becomes progressively softer, requiring a reduction in its load carrying capacity. ------------------------------------------------------------ ------ Chemical Resistance Excellent resistance to most chemicals, including hydraulic fluid, diesel and ozone. Not recommended for exposure to toluene, alcohol or gasoline. Not recommended for long-term (over eight hours) immersion in water. ------------------------------------------------------------ ------ Cutting Sorbothane Sorbothane, depending on thickness, cuts easily with a scissors or X-acto-style knife. It can be die-cut however the cut is not clean. Chilling the material to temperatures below zero degrees Fahrenheit will improve the quality of the die cut. It can be milled if chilled below zero degrees Fahrenheit. Water jet cutting at room temperature will give an attractive cut. ------------------------------------------------------------ ------ Fire Resistance Sorbothane will not burn. When subjected to a direct flame there is slight surface charring. Sorbothane may be purchased with a flame retardant additive. ------------------------------------------------------------ ------ Mechanical Properties of Sorbothane -------Durometer--------- Units Item 30 50 70 Tensile Strength 75 124.7 155 psi Glass Transition -50 -45 -40 deg. F. Rebound Resilience 10% 13.2% 15% Dielectric Strength 11.1 13.1 kV/mm Compression Set 9.7% 6.2% 4.5% Loss Factor (Tan Delta) At 50 Hertz 0.72 0.65 0.52 At 100 Hertz 0.74 0.67 0.55 Dynamic Shear Modulus At 50 Hertz 80 90 100 psi Dynamic Young's Modulus (Compression) At 50 Hertz 240 270 300 psi Density 80 lbs/cubic foot Specific Gravity 1.3 Optimum Temperature Range: 0 to 160 degrees Fahrenheit Extended Temperature Range (reduced performance): -40 to 200 deg. F.
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