PMC 121-30 WET

SKU: 700210

Size: Gallon Kit
Sale price$158.34

unit(s) in Stock.


unit(s) in Stock.

* Price and availability may vary.
* If unit(s) in stock is 0, item is currently unavailable or special order.


Unit Size Net Weight
Gallon Kit 16 lb
Five Gallon Kit 80 lb



The PMC-121 Series urethane rubbers feature convenient one-to-one by volume mix ratios. PMC-121/30 Dry and PMC- 121/30 Wet are exceptionally strong and abrasion resistant for soft urethane mold rubbers.
Pick the one best suited for your application. The dry version does not exude oil and can be used for casting waxes, Smooth-On liquid plastics, gypsum plasters and other materials. The wet version exudes oil that aids in demolding hard plasters and concrete. PMC-121/50 is a "wet-only" mold rubber that is long lasting and durable when used in a variety of applications including reproduction of ornamental plaster, precast concrete and ceramic case molds.
Note: "wet" rubber has a higher net shrinkage value vs. "dry " rubber. PMCª 121 Series mold rubbers are easy to mix and pour and are exceptionally strong. They are suited for a variety of applications including making molds to reproduce sculpture and architectural elements, as well as for making special effects, toys and prototypes. These rubbers will meet the stringent demands of production casting of wax, plasters, concrete, resins and epoxies. Vibrant colors can be achieved by adding So-Strongª Color Tints, available from Smooth-On.
Technical Properties
Mix Ratio by Weight 1A:1B
Mix Ratio by Volume 1A:1B
Pot Life 30 minutes
Cure Time 16 hours
Color Clear Amber
Shore Hardness 30A
Mixed Viscosity 1,800 cps
Shrinkage < .001 in. / in.
Specific Volume 26.7 cu. in./lb.
Specific Gravity 1.04g/cc
Tensile Strength 400 psi
100% Modulus 82 psi
Elongation @ Break 1,000%
Die C Tear Strength 75 pli


Special Order Items
The products listed below are currently SPECIAL ORDER items and require pre order.
Lead times may vary - For more information please contact our staff.

700210 - PMC 121-30 WET - Gallon Kit
700240 - PMC 121-30 WET - Five Gallon Kit
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