Silicones, Inc.Silicones, Inc.RTV-2 Silicone Rubber
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Technical Datasheet · P-750

Fast-cure platinum-cure RTV-2 silicone for reusable vacuum bags

Platinum cure (addition)

Key properties

Shore A hardness (7 day)26Shore A

Feels like a rubber band. Stretchy and very soft.

Mixed viscosity20,000–21,000cps

Log scale. Lower viscosity pours thinner and captures finer detail; higher viscosity holds on vertical surfaces.

Mix ratio (wt)1:1
Working time1.3–1.5hours
Cure time16–24hours
Tear resistance121ppi

Handling and safety

Safety data sheet

All safety data sheets

General Information

P-750 is a platinum catalyzed, addition reacted, 1:1 system designed for the production of reusable vacuum bags. Quick curing, high physicals make it an excellent choice for this type of use.

The information contained in this data sheet is, to our best knowledge, true and accurate, but all recommendations or suggestions are made without guarantee. Since the conditions of use are beyond our control, Silicones, Inc. disclaims any liability incurred in connection with the use of our products and information contained herein.

Typical Properties

Uncatalyzed Compound

Color
Base:TranslucentActivator:Green
Viscosity
Base:20,000–21,000cpsActivator:20,000–21,000cps
Mixing Ratio
By weight:1:1By volume:n.a.
Mixed Viscosity
20,000–21,000cps
Working Time
1.3–1.5hours
Cure Time
16–24hours
Shelf Life
6months

Vulcanized (Cured) Properties

Measured at 7 days, 70°F / 50% relative humidity

Shore A Hardness
One day:267 days:26
±4 durometer
Tear Resistance
121ppiASTM D624
Tensile Strength
546psiASTM D412
Elongation
696%ASTM D412
Service Temperature
n.a.
Shrinkage
n.a.
Specific Gravity
1.07
Coverage
n.a.
Demold Time
30 minutes
Working time
8 to 10 minutes
Shore A at 30 minutes
26

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