Need help choosing the right material for your project? The Advanced Product Selector Tool can help you identify product options based on variables like Material Type, Working Time, Cure Time, Shore Hardness, and more. It is menu driven and easy to use. See Disclaimer.
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Add filters to sort through our materials by your required specifications.
Product Category is:
Silicone Rubber - Tin Cure
Silicone Rubber - Platinum Cure
Epoxy Casting and Laminating Resins
Epoxy and Urethane Coatings
Mix and Pour Expanding Foams
Filter Criteria are used to narrow down our material offerings based on your specific needs. One or more criteria can be used.
Product Category is a broad classification of a material by its chemistry (such a urethane rubber) or its functionality (such as adhesives). Some materials may exist in multiple categories.
Pot Life is the amount of time that a catalyzed material remains workable after components have been mixed together.
Typical Range: 30 seconds – 2 hours
Cure Time (or demold time) is the amount of time until a catalyzed material can be handled without distortion.
Typical Range: 5 minutes – 24 hours
Mixed Viscosity is the resistance of a material's flow measured in centipoise (cps) using ASTM D‑2393. Silicone rubber with a viscosity of 15,000 cps or higher should be vacuum degassed prior to use.
Typical Range: 80 cps – 12,000 cps (resin) 1,200 cps – 3,000 cps (urethane rubber) 3,000 cps – 35,000 cps (silicone rubber)
Consistency is a description of the workability of mixed material or how it is meant to be used.
Mix Ratio is the proportion at which the two components (Parts A & B) must be mixed in a two-part system. Many Smooth-On materials have a "parts by volume" mix ratio where no gram scale is necessary while others only have a "parts by weight" ratio necessitating an accurate scale.
Shore A Hardness measures the resistance of an elastomeric material to indentation as measured by a Shore A device defined by ASTM D‑2240.
Range: 0 A – 100 A
Shore 00 Hardness measures the resistance of a very soft elastomeric material to indentation as measured by a Shore 00 device defined by ASTM D‑2240.
Range: 0 OO – 100 OO
Shore D Hardness measures the resistance of a rigid material to indentation as measured by a Shore D device defined by ASTM D‑2240.
Range: 0 D – 100 D
Tensile Strength is the force needed to stretch a material until it breaks, measured in pounds per square inch (psi) using ASTM D‑638.
Typical Range: 120 psi – 2,000 psi (rubber) 1,000 psi – 8,000 psi (resin)
Heat Deflection Temperature (HDT)also called Heat Distortion Temperature measures the temperature at which a rigid material becomes rubbery. A cast bar of material is placed in an oil bath and a flexural load is applied. The oil is heated until the bar bends a preset amount. Measured in degrees Fahrenheit using ASTM D‑648.
Note: some materials have a higher HDT when post-cured.
Typical Range: 120 °F – 350 °F
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Advanced Product Selector Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Advanced Product Selector Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.