RTV-3040 Clear Mold Making Silicone Rubber

Popular Specifications

22A, 36A, 38A, or 45A Variable Shore Hardness
40,000 cps Viscosity
100, 120, or 130 ppi Tear Strength
Elkem RTV-3040, formerly Bluestar Bluesil RTV-3040, is specifically formulated to make clear rubber molds and features the strength and clarity required in high-end prototyping applications. RTV-3040 Base with RTV-3040 Catalyst provides a 38 Shore A hardness, our most popular combination. The base may also be used with other catalysts resulting in hardnesses from 22 to 45 Shore A. It is compliant to 21CFR177.2600 (repeated food contact applications).

For those new to Elkem Silicone Rubber, we offer Sample Kits.


This product is also available on our Miapoxy website, which features pricing & direct ordering capabilities.

Catalog Number Description   Qty  
054903 RTV-3040 Quart Kit
054823 RTV-3040 Gallon Kit
054823KG RTV-3040 Deadener - 18 KG SO
054857KG RTV-3040 Base Only - 20 KG
054868 RTV-3020 Catalyst Only 2 KG (4.4 lbs) SO
054931KG RTV-3038 Catalyst Only 2 KG (4.4 lbs) SO
054858KG RTV-3040 Catalyst Only - 2 KG
054866 RTV-3045 Catalyst Only 2 KG (4.4 lbs) SO
054871KG RTV-3040 Base Only - 200 KG
054869KG RTV-3040 Base Only - 200 KG, unlined
054867 RTV-3020 Catalyst Only 20 KG (44.1 lbs) SO
054937KG RTV-3038 Catalyst Only 20 KG (44.1 lbs) SO
054872KG RTV-3040 Catalyst Only - 20 KG

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Please Note:
Liquid products are sold by weight, not volume.
SPB = Sheets per Box

Shipping and Handling:
Freeman charges standard published UPS/FedEx shipping rates (unless freight is specified). All orders under $25 are subject to a $5 small order fee. International orders are subject to a $250 minimum order.

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Ship Note Legend:
HAZ-G = Hazardous material, cannot ship air, up to $33 surcharge applied for each package shipped ground within the US.
HAZ-A = Hazardous material, cannot ship air, no surcharge for ground shipping.
HAZ-T = Toxic material, must be sent by freight carrier.
FRT = must be sent by freight carrier due to size, weight, or hazardous classification.