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Supplier Homepage > Products > Molding Silicone Rubber For GRC Component,gypsum Molding Silicone Rubber
Molding Silicone Rubber For GRC Component,gypsum Molding Silicone Rubber
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product: view count: 356Molding Silicone Rubber For GRC Component,gypsum Molding Silicone Rubber 
unit price: Negotiable
min amount:
period for delivery: Consignment Deadline days
Expiry date: Long Effective
last update: 2017-10-17 07:58
Quick Details

  • Place of Origin: Guangdong, China (Mainland)

  • Brand Name: RXD

  • Model Number: RTV825

  • Application: Mold Making Materials

  • Color: White

  • Hardness: 25±2

  • Mixing ratio: 100:3

  • Viscosity: 22000±2000 mPa.s

  • Tensile strength: >3.8 MPa

  • Elongation at break: >450%

  • Tear strength: >29 N/mm

  • Linear shrinkage: <0.3%

  • Certificate: RoHS.MSDS.SGS ISO9001:2000

Packaging & Delivery

Packaging Details: 1kg/5kg/20kg/25kg/200kg plastic/iron drum, and please contact your local contact for further
information on packaging size and availability.
Vacuum bag can take according to users demand.
Delivery Detail: 3-5 working days

Product Description


Pourable ,Condensation Cure Mold Making RTV2 Silicone Rubber Condensation tin cure molding silicone rubber, Tin-based silicone, also called condensation-cure silicone, are two-component materials which cure at room temperature (RTV) to flexible, high tear-strength rubbers. Tin cured silicone can be poured onto models or they can be made brush-able by adding a Thixotropic additive. They are ideal for molds where easy release or high temperature resistance is required.


Condensation Cure Mold Making RTV2 Silicone Rubbers can be poured or brush onto products for casting polyurethane,epoxy, polyester resin, gypsum/plaster, cement, waxes, low melt alloys/metals, etc.


• Excellent tear strength

• Little rate of deformation and shrinkage

• Very high elongation and flexibility• High temperature resist,high tear resist

Physical properties of Condensation Cure Mold Making RTV2 Silicone Rubber
Curing Agent(Part B)

Appearance Mixing Ratio By Weight Pot life Time De-mold Time Full Curing
Clear 100:2 60-70 min
6 Hours 10 Hours
Clear 100:3 30-40 min
4 Hours 8 Hours
Clear 100:4 15-20 min
2 Hours 5 Hours

Antioxidant Agent

RTV2 silicone Antioxidant agent,mix ratio with silicone rubber at 0.5%-1%,it can great increase about 30%-100% using times of silicone mold and make the silicone rubber with high heat resistance and solvent resistance.

Thixotropic agent

Thickening agent for silicone rubber for vertical surface application(making brush-on molds)

Preparing the Model

Porous surfaces, such as wood, should be dried and sealed. Also applying a release agent, such as petroleum jelly will aid in easy release of a silicone mold. Because silicone can sometimes bond to surfaces which contain silica, such as glass, cements and natural stone; it is recommended to do a spot test for possible adhesion.

Detailed Images

color White Tensile strength >3.8 MPa
Viscosity 22000±2000 mPa.s Elongation at break >450%
Density at 23℃ 1.08 g/cm³ Tear strength >29 N/mm
Hardness Shore A 25±2 Linear shrinkage <0.3%

Mixing instrustions

This material can readily accept pigments.Stirring individual components before use is recommended.Make sure to weigh and measure accurately.Close containers tightly after use.Products should be stored in their original,sealed containers in an environment that does not exceed 90℉.Under these conditions, the product will achieve the expected shelf life.The following procedure is an example of a 100:3 mix ratio addition cure product. Please refer to the product’s technical sheet for mix ratio information:

Mixing: Charge 100kg by weight of “Part A” and 3kg by weight of “Part B” into a clean, compatible metal or plastic container. The volume of the container should be 3-4 times the volume of the material to be mixed. This allows for expansion of the siloxane material as it de-gasses. Mix thoroughly by hand or with mixing equipment while minimizing air entrapment until a homogeneous mixture is obtained. This will occur when the material takes on a uniform color with no visible striations. Scrape the sides and bottom of the container thoroughly several times while mixing. Once mixing is complete it is recommended that the material be de-aired 2-3 times by intermittent evacuation for a few minutes to minimize any imperfections due to bubbles in the cured material. Typically after releasing the vacuum 2-3 times the mass will collapse on itself at which time the vacuum should be left on only 2-4 minutes longer.

Packing & Delivery


The 'Best use before end' date of each batch is shown on the product label.Storage beyond the date specified on the label does not necessarily mean that the product is no longer usable.In this case however,the properties required for the intended use must be checked for quality assurance reasons.

Packing information

1kg/5kg/20kg/25kg/200kg plastic/iron drum, and please contact your local contact for further information on packaging size and availability.Vacuum bag can take according to users demand.

Safety-Avoid contact with mucous membranes and eyes. Best method of cleanup is by wiping with disposable paper towels and washing with waterless hand cleaner, then soap and water. If solvents must be used, denatured ethyl alcohol is best, but should be handled with respect for health and flammability hazards. The information and recommendations in this publication are to the best of our knowledge reliable. However nothing herein is to be construed as a warranty or representation. Users should make their own tests to determine the applicability of such information or the suitability of any products for their own particular purposes. Statements concerning the use of the products described herein are not to be construed as recommending the infringement of any patent and no liability for infringement arising out of any such use is to be assumed.


Our Company

Dongguan Rongxin Silicone Technology Co., Ltd. was founded in 1999, and is located in Dongguan, Guangdong. We are a professional silicone material manufacturer, integrating the R&D, production and sales. Main products are Condensation molding silion rubber, Addition molding silicone rubber,Addition electronic potting silicone rubber,Condensation electronic potting silicone rubber,leather printing roller silicone rubber,LED strip light silicone rubber,human casting silicone rubber and so on. All of our products are with high quality and have got I S O, RoHS, Reach and SGS certificates. Our customers are from all over the world. If you are interested in our products, please feel free to contact us for further information.

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