WENZHOU HEFENG SILICONE RUBBER CO.,LTD

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You are here: Home » Products » Liquid Silicone Rubber » Professional Liquid Silicone Rubber for Precision Mold Making

Professional Liquid Silicone Rubber for Precision Mold Making

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Product Introduction 
Professional-grade Liquid Silicone Rubber specifically engineered for high-precision mold making applications. This two-component RTV (Room Temperature Vulcanizing) silicone system offers exceptional flowability, dimensional stability, and detail reproduction. With low shrinkage and excellent tear strength, it's ideal for creating complex molds in industrial, artistic, and prototyping applications. The product meets FDA, ROHS, and REACH standards, ensuring safety for diverse molding requirements.


Product Advantages 

l Superior Detail Reproduction

Precisely captures intricate surface patterns and textures with exceptional accuracy. Ideal for projects requiring microscopic detail retention.

l Excellent Flow Properties

Smooth, self-leveling characteristics ensure complete mold cavity filling. Minimizes the risk of air entrapment and void formation during pouring.

l Fast Curing Time

Quick room temperature curing enables faster production cycles. Maintains dimensional stability throughout the curing process for reliable results.

l High Tear Strength

Excellent resistance to tearing during demolding and repeated use. Ensures longer mold life and consistent performance over multiple casting cycles.

l Minimal Shrinkage

Maintains original dimensions after curing for precise reproductions. Guarantees accurate final parts that match original specifications.

l Long Pot Life

Provides adequate working time for complex mold making projects. Allows proper degassing and precise placement without premature curing.


Type numberHF-5140ZHF-5150AHF-5160AHF-5170AHF-5180A
Shore A20±340±360±370±350±3
A/B ratio2:1002:1002:1001:11:1
Density(g/cm3)1.021.051.171.151.25
Tensile strength(MPa)≥ 4.5≥ 6≥ 7.5≥ 8≥ 9
Elongation(%)≥ 900≥ 750≥550≥ 400≥ 250
Viscosity(Pa.s)15002500350045005500
Tear strength right Angle(kN/m)≥ 8≥ 12≥ 25≥22≥40
AppearanceTransparentTransparentTransparentTransparentTranslucent
(Flame-retardant rating)UL94V-0UL94V-0UL94V-0UL94V-0UL94V-0
Transmittance(%)9090909095


Product Applications 

1、Industrial Prototyping

• Rapid prototyping molds

High precision molds for fast prototype development, featuring excellent detail reproduction and quick curing time.

• Product development models

Ideal for creating accurate test models during product development, supporting multiple design iterations.

• Pattern making

Perfect for master pattern creation with consistent quality and minimal shrinkage.


2、Artistic Casting

• Sculpture reproduction

Captures intricate artistic details down to 0.1mm, ideal for fine art reproduction.

• Architectural details

Excellent flowability for complex architectural element molding.

• Decorative elements

Creates detailed ornamental pieces with superior surface finish.

3、Technical Molding

• Electronic components

Precision molds for electronic parts with excellent dimensional stability.

• Medical device prototypes

FDA-compliant material for accurate medical component prototyping.

• Precision parts replication

Low shrinkage rate ensures exact technical part reproduction.



1.What kinds of silicone rubbers do you supply?

--HTV Silicone,Solid Silicone, Liquid silicone rubber,Insulating silicone rubber, fumed silicone rubber,flame retardant silicone rubber, general-purpose silicone rubber, basic rubber compound and all kinds of customized silicone rubber products in various fields, covering electronics, food and medical products, cooking utensil, electricity, automotive &aerospace accessories, sporting goods, sealing material, construction, babyware etc, with forming process for products including molding and extrusion and injection


2. Are you a manufacturer or trading company?

--We are a manufacturer, our factories are located in Wenzhou China.


3. Do you provide free samples?

  --Yes, we offer free samples to start cooperation.


4.How long can I expect to get the sample ?

  --Usually 2 days for preparing samples, 5-7 days for shipping.


5. How long is the lead time for bulk order?

  --For example about insulation silicone rubber material, 1-2 days for 1 ton(1000kgs), 14 days for 20tons(20ft container).


6.Do you inspect goods before delivery?

 --We have a professional QC team, each batch of silicone rubber must be tested by our safe quality examination system before shipping.


7.What is your minimum order quantity?

--Depending on the product you need, for example about insulation silicone rubber material, normal MOQ is 100kgs. If you need less than 100kgs for starting a trial order, it might be okay.


8. What services can we provide?

--Accepted Trade Terms: EXW, FOB, CFR, CIF, Express Delivery.

--Accepted Payment Currency: USD, EURO,CNY.

--Accepted Payment Terms: T/T,L/C,D/P Or Communicate With Us To Determine.


9.Why silicone rubber add curing agent after mixing a lot of bubbles?

--This is normal physical phenomena. The liquid will produce a large number of bubbles in the mixing time, so, it must pass through the vacuum exhaust bubble treatment.


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For many years, the company has always adhered to the principle of "quality first, unity and pragmatism, innovation and high efficiency" to serve our customers.

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 No.449, Industrial Ring Road, Dongmeng Industrial Zone, Wuniu Street, Yongjia County, Wenzhou China.
 +86-13566239436
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