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Silpak RU-470

Silpak RU-470 is a liquid, two-component, 100% solids Urethane Elastomer RTV that is easily processed. This system provides a firm, semi-flexible, durable and abrasion resistant rubber compound. Used for a variety of applications including molds, concrete texture stamps and form liners, and rubber parts. Molds are used to cast concrete, wax, and plaster parts.

Polymer Name: Polyurethane Thermoset Elastomer (unspecified)

End Uses: Heavy Duty Bags, Stamps

Features: Abrasion Resistant, Dimensional Stability, Durable, Flexible, Good Elongation, Low Shrinkage, Rapid Cycle Time, Tear Resistance

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Technologies

Features & Benefits

Unique Characteristics
  • Easy to Process 1-1 Mix Ratio
  • Dimensionally Stable—Minimal Shrinkage
  • Excellent Strength Properties

Applications & Uses

Plastics & Elastomers End Uses

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Color (Comp A)Yellow/Clear
Color (Comp B)Yellow/Clear
Cure Time (Reactivity)24hrs
Coverage27in3/lb
Elongation 460%ASTM D-638
Gel Time (Reactivity)90min
Mix Ratio, By Weight (Comp A)100
Mix Ratio, By Weight (Comp B)100
Mixed Viscosity3000cps
Hardness70Shore A
Tear Resistance95pliASTM D-624
Tensile Strength422psiASTM D-638

Safety & Health

Handling and Safety

Use proper equipment—gloves, glasses and apron when using materials. Avoid direct contact with skin and eyes. If skin contact occurs, clean area with waterless hand cleaner or isopropyl alcohol. For eye contact, flush eye with water for 15 minutes and call physician. Use materials under adequate ventilation.

Packaging & Availability

Pacakaging
  • Pint Kit (2 lbs)
  • Qrt Kit (4 lbs)
  • Gal Kit (16 lbs)
  • 5 Gal Kit (80 lbs)

Storage & Handling

Storage/ Shelf Life

A and B components must be stored in their original, unopened containers at temperatures between 65F and 85F. Shelf life of materials when kept in unopened sealed containers, at the recommended storage conditions, is 6 months. Containers should not be opened until ready for use. Once containers are opened, material should be used in a short time period. Pre-test any aged material before using. Molds or parts should be cleaned with a soap solution and completely dried prior to storing them in a dry, cool environment. Avoid stacking or exposing them to environmental elements—UV and moisture.