17SP1328-G_TDS.pdf

SILPAK R-1328
High Strength, General Purpose, Tin RTV Silicone System
R-1328 is a 25 Shore A, tin Base (condensation cure), two-component, room temperature cure (RTV) rubber
designed primarily as general purpose, high-strength rubber for making molds and flexible rubber parts. Use molds
to cast polyester, urethane, epoxy, low melt metal (350 F), thermoplastics (polyvinyl), wax, soap, plaster, and any
material where a release free casting is required.
Features
e Excellent physical properties Low viscosity for easy pouring
* High tear resistance Additional Activators available for faster cure
e Long working life finished molds and brush on applications.
Applications
Use molds to cast polyester, urethane, epoxy, low melt metal (350 F), thermoplastics (polyvinyl), wax, soap,
plaster, and any material where a release free casting is required.
e Production molds e Production parts
Physical and Handling Properties
Property Value
Color White Base / Green Activator
Mix Ratio, by weight 100 Base:10 Activator
Initial Viscosity, Part A, cP 30,000
Initial Viscosity, Part B, cP 50
Initial Mixed Viscosity, at 77 F, cP 20,000
Pot Life, min 90
Demold Time, hr 16
Specific Gravity 1.18
Tensile Strength, psi 360
Elongation, % 500
Tear Resistance, pli 135
Values listed above are typical and not intended for use in specifications.
Silpak is a division of Polytek Development Corp. – www.silpak.com – 800.858.5990 – 55 Hilton Street, Easton, PA 18042