Dow Silastic V RTV Silicone Rubber

Dow Silastic V RTV Silicone Rubber Datasheet
  • Description for Dow Silastic V RTV Silicone Rubber

    High tear strength, medium durometer, suited for architectural and prototype design.

    *See Terms of Use Below

    Brand Silastic
    Application Type Mold-Making
    1 Part or 2 Part 2 Part
    Material Form Liquid
    Substrate Porous, Concrete
    Manufacturer Dow
    Chemistry Silicone rubber
    Application Method Spatula
    Cure Method Base/Cruing agent
    Cure Temperature (°C) 23, 20 to 25
    Cure Time (min) 1,440, 360 to 480
    Viscosity (cPs) Medium, Thixotropic, 19,000, Non-flowable, Pourable
    Color Purple
    Chemical Resistance Excellent
    High Temperature Resistance (°C) 200
  • Technical Data for Dow Silastic V RTV Silicone Rubber

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 2 Part
      • Part A Name - Base
      • Part B Name - Curing Agent
    • Material Form
      • Liquid
    • Substrate
      • Porous Substrates - Porous
      • Concrete
      • Other - Plaster
    • Industry
    • Chemistry
    • Application Method
      • Brush
      • Spatula/Trowel - Spatula
    • Cure Method
      • 2-Part Cure - Base/Cruing agent
    • Color
      • Purple
    • Brand
      • Silastic
    Specifications
    Cure Specs
    Cure Temperature (°C) 23, 20 to 25
    Cure Time (min) 1,440, 360 to 480
    Viscosity (cPs) Medium, Thixotropic, 19,000, Non-flowable, Pourable Test Method
    Linear Shrinkage (%) <0.10 Test Method
    Work / Pot Time (min) 60 to 90 Test Method
    Thixotropic Thixotropic
    Mix Ratio 10:1 (by volume), 100:10 (by weight)
    Bond Strength
    General Bond Strength (psi) High
    Tear Strength (piw) 182 (ppi), 32 (kN/m), High, Tear Resistance Test Method
    Tensile Strength (psi) 913, 6.3 (Mpa) Test Method
    Material Resistance
    Chemical Resistance Excellent
    High Temperature Resistance (°C) 200
    Hardness
    Shore A Hardness 38 to 40, 38 Test Method
    Elongation (%) 500, High Test Method
    Flexibility Flexible
    Other Properties
    Specific Gravity 1.35 (gm/cc)
    Flash Point (°F) 140.0
    Business Information
    Shelf Life Details When stored at or below 25°C (77°F) in the original unopened containers, SILASTIC V RTV Base and SILASTIC V RTV Curing Agent have a usable life of 12 months from the date of production. SILASTIC V RTV Base and SILASTIC V RTV Curing Agent can be sensitive to moisture and contamination. Ensure that containers are tightly closed after use.
    Shelf Life Type from the date of production
    Shelf Life (mon) 12
    Not Good For
    Don't Use For Food molding, dental dental, human skin molding
  • Best Practices for Dow Silastic V RTV Silicone Rubber

    *See Terms of Use Below

    1. Surface Preparation

      The surface of the original should be clean and free of loose material. If necessary, and in particular with porous substrates, use a suitable release agent such as petroleum jelly or soap solution. In all case, it is advisable to check before casting that no discoloration or adhesion occurs between the product and the original or mold frame.

    2. Mixing

      Weigh 100 parts of SILASTIC V RTV Base and 10 parts of SILASTIC V RTV Curing Agent (see handling precautions) in a clean container, then mix together until the curing agent is completely disperse in the base. Hand or mechanical mixing can be used, but do not mix for an extended period of time or allow the temperature to exceed 35°C (95°F). Mix sufficiently small quantities to ensure thorough mixing of the base and curing agent.

    3. Deairing/Degassing

      It is strongly recommended that entrapped air be removed in a vacuum chamber, allowing the mix to completely expand and then collapse. After a further 1-2 minutes under vacuum, the mix should be inspected and if free of air bubbles, can then be used. A volume increase of 2-3 times will occur on vacuum de-airing the mixture, so a suitably large container should be chosen.

      Note: If no vacuum de-airing equipment is available, air entrapment can be minimized by mixing a small quantity of base and curing agent, then using a brush, painting the original with a 1-2mm layer. Leave at room temperature until the surface is bubble free and the laver has begun to cure. Mix a further quantity of base and curing agent and proceed as follows to produce a final mold. The base/curing agent ration MUST be between 100:9.5 and 100:10.5.

  • Comparable Materials for Dow Silastic V RTV Silicone Rubber

    *See Terms of Use Below

    Spec Engine® Results

Questions about this material?

Get personal assistance with your specific application needs.

Your Profile Edit
  1. 743bf25b-1e99-420f-ad8d-f5f1494248f2
  2. 743bf25b-1e99-420f-ad8d-f5f1494248f2

Popular Articles

Testing the effectiveness of surface treatments

Read Article

6 objects held together by adhesives you probably can't live without

Read Article

Infographic: ENSURING A STRONG BOND - 6 Basic Methods of Surface Preparation

Read Article

Electrically Conductive Adhesives

Read Article

Sponsored Articles

Unique Advantages of Contact Adhesives

Read Article

Using LOCTITE® 454™ is a Valid Option for Engineers Working with a Wide Variety of Materials

Read Article

Sylgard 184 by DOW is the Top Choice for a Transparent, Silicone Encapsulant. Read Why:

Read Article

Case Study: Creating reliable, corrosion-free bonds with LORD® 406 acrylic adhesive

Read Article
Information provided by Gluespec

Why Register?

  • View Technical Details
  • View Test Methods
  • View Key Specifications
  • View Similar Materials
  • Save your Project Searches

Already registered? Sign in.

Questions? Learn more about Gluespec

Gluespec Poll

What level of expertise do you have in specialty chemicals like adhesives, sealants, conformal coatings, etc.?
Linear Shrinkage Test Methods
Linear Shrinkage Test Method
<0.10 % After 7 days
Viscosity Test Methods
Viscosity Test Method
Medium
Thixotropic
19,000 cPs mixture (100:10 by weight)
Non-flowable
Pourable
Work / Pot Time Test Methods
Work / Pot Time Temperature
60 to 90 min 23°C
Tensile Strength Test Methods
Tensile Strength Cure Time Cure Temperature
913 psi 1,440 min 23°C
6.3 (Mpa) 1,440 min 23°C
Tear Strength Test Methods
Tear Strength Cure Time Cure Temperature Test Method
182 (ppi) 1,440 min 23°C Die B
32 (kN/m) 1,440 min 23°C Die B
High
Tear Resistance
Elongation Test Methods
Elongation Test Method
500 % Cured for 24 hours at 23°C (73.4°F)
High Elongation Test Method
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method Hardness Temperature
38 to 40 Hardness/Durometer Test Method 23°C
38 Cured for 24 hours at 23°C (73.4°F)