Silpak, Inc

Silicone Platinum RTV

R-2324 LM (25A Shore)

R-2324 LM A/B Two-Part, Platinum RTV (Addition Cure) silicone rubber designed for mold making, embedding, electrical applications and thermal expanding tools. This system exhibits Good Elongation and Tear Strength.  The controlled coefficient of thermal expansion makes R-2324LM A/B ideal for casting pressure pads and advanced composite tooling rubber.

Physical Properties (TYPICAL VALUES):

Uncured Compound                       Cured Compound 24 hrs. @ 77F (25C)
Color: Blue-mixed 
Mix Viscosity @ RT: 35,000             Specific Gravity: 1.08
Mixing Ratio A/B: 10/1                   Durometer: 25 +/-5
                                                  Tensile Strength (PSI): 530            
                                                  Tear Strength (PSI): 80
                                                  Elongation %: 510
Mixing Instructions:

This base and curing agent are mixed just before using. Mix 10 parts base to 1 part curing agent by weight. Automatic mixing equipment or manual mixing may be used to combine base and curing agent. Immediately after mixing, place the material in a vacuum chamber to remove trapped air. As vacuum is drawn, the material will expand as much as four times its original volume. Remove from vacuum chamber and pour very gently, so as not to incorporate air into the material.

Inhibition:

Certain materials will cause inhibition or neutralizing of the curing agent: sulfur and organo-metallic salt containing compounds found in organic rubbers, and many condensation cure RTV, chloride solvents, and amines-epoxy. Inhibition may easily be determined by brushing a small quantity of these materials over a localized area of the part to be reproduced. If the material remains gummy or uncured after the curing time, then the part’s surface is acting as an inhibitor. **See Addition Cure Technical Data Sheet for inhibiting.

Curing Chart:

The information and data contained herein are based on information we believe reliable. Each user of the material should thoroughly test any application and independently conclude satisfactory performance before commercializing. Suggestions of uses should not be taken as inducements to infringe on any particular patent.