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Silpak RU-430

Silpak RU-430 is a liquid, two-component, 100% solids Urethane Elastomer RTV that is easy to process. This system is designed with high elongation properties with good tear resistance and offers excellent library shelf-life. Use for making molds or rubber parts. Molds are used to cast concrete, wax, and plaster parts. **Use RU-430 C softening agent to reduce hardness.

Polymer Name: Polyurethane Thermoset Elastomer (unspecified)

Features: Easy Formulation, Enhanced Tear Resistant, High Elongation, Long Seal Life, Low Viscosity

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family
Technologies

Features & Benefits

Unique Characteristics
  • Easy to Process with 1 to 1 Mix Ratio
  • Low Viscosity for Capturing Detail
  • Good Durometer for Easier Demolding

Applications & Uses

Properties

Physical Form
Typical Properties
ValueUnitsTest Method / Conditions
Color (Comp A)Yellow/Clear
Color (Comp B)Translucent Amber
Coverage27cu/in/lb
De-mold Time (Reactivity)16 – 24 hrs
Elongation 1100%ASTM D-638
Gel Time (Reactivity)20min
Mix Ratio by weight (Comp A)100
Mix Ratio by weight (Comp B)100
Hardness30Shore A
Specific Gravity1
Tear Resistance98pliASTM D-624
Tensile Strength402psiASTM D-638
Viscosity (Comp A)2000cps
Viscosity (Comp B)1500cps

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.