Smooth-Sil 940

SKU: 799059

Size: Quart Kit
Sale price$52.70

unit(s) in Stock.


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
Quart Kit 2.2 lb
Gallon Kit 11 lb
Five Gallon Kit 55 lb



Smooth-Sil 940 Food Grade is a Platinum Silicone with a shore hardness of 40. Smooth-Sil 940 is suitable for food related applications. See separate technical bulletin for usage instructions.
Technical Properties
Mix Ratio by Weight 100A:10B
Mix Ratio by Volume N/A
Pot Life 30 minutes
Cure Time 24 hours
Color Pink
Shore Hardness 40A
Mixed Viscosity 35,000 cps
Shrinkage < .001 in./in.
Specific Volume 23.4 cu. in./lb.
Specific Gravity 1.18g/cc
Useful Temperature (max)< 450¼F
Useful Temperature (min)< -65¼F
Tensile Strength 400 psi
100% Modulus 200 psi
Elongation @ Break 300%
Die B Tear Strength 100 pli


Smooth-Sil 940 Platinum Silicone (platinum curative) cures at room temperature with no shrinkage. Exhibits good chemical, abrasion and heat resistance.
Smooth-Sil 940 is suitable for making baking molds and trays, ice trays, casting butter, chocolate and other applications used to produce foods. Smooth-Sil 940 has been tested by an independent laboratory to comply with the total extractive limits when properly processed and heat cured. Refer to the Smooth-Sil Platinum Series technical bulletin for proper processing instructions for Smooth-Sil 940.Wash mold cavity thoroughly with dishwashing detergent/water solution. Rinse thoroughly and allow drying before using.
The ingredients and ingredient levels in Smooth-Sil 940 comply with 21 CFR 177.2600, rubber articles for repeated use subject to the total extractive limits as specified and published in the Code of Federal Regulations. FDA compliance does not mean that Smooth-Sil 940 is FDA approved.

Using Mold For Baking
Place mold on a baking sheet for greater stability and handling.Do not expose rubber to temperatures above 400 F / 204C. Do not subject molds to the broiler.Silicone rubber does not distribute heat evenly. Food in shallow molds will bake faster vs. deep draft molds. Thick sections will retain heat longer than thin sections. Check frequently for doneness on first use.Clean molds with soapy warm water and a soft sponge and rinse thoroughly between batches or prior to storing. You can dry the mold quickly in an oven. Bake for 5 minutes at 300F / 150C.
Smooth-Sil 940 Platinum Silicone may also be used for rapid prototyping, wax casting (foundries and candle makers), architectural restoration and for casting concrete.
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.

799062 - Smooth-Sil 940 - Five Gallon Kit
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