QM 128

$172.28
SKU
QUA QM 128

QM 128 is a two-component, room temperature, condensation cure silicone material.  The cured rubber has excellent mechanical properties and shelf-life stability.  This material is an excellent choice for the molding of intricate patterns, skin molding and applications where high durometer, dimensional stability and extremely tough rubber are required.  A variety of catalysts are offered with this material.

Packing Mix Ratio Weight
Gallon Pail Kit 11 lbs 10:1
5 Gallon Pail Kit 44 lbs 10:1
55 Gallon Drum Kit 550 lbs 10:1

KEY FEATURES
High tear strength
Low viscosity
Fast de-mold time  

The standard catalyst for QM 128 is QM Cat Purple.  
Additional catalysts include QM Cat Blue, QM Cat Red 3 QM Cat Clear, various thixotropic catalysts and QM Cat Clear FG for indirect food contact applications.

*Complies with FDA indirect food contact regulation CFR177.2600 only when used with QM Cat Clear FG.  Refer to QM Cat Clear FG data sheet for typical properties. MAIN APPLICATIONS Molds for polyester, polyurethane and epoxy resin castings Molds for technical articles and prototypes Molds for small and large statues

Uncatalyzed
TEST QM 113 QM CAT PURPLE QM CAT BLUE QM CAT RED 3
Color Beige Purple Blue Red
Viscosity 35,000 cps 100 csp 100 cps 100 cps
Specific Gravity 1.31 1.00 1.00 1.00

Catalyzed
Mix Ratio 10:1 by weight
PROPERTY QM CAT PURPLE QM CAT BLUE QM CAT RED 3
Color Light Purple Light Blue Light Red
Viscosity 30,000 cps 30,000 cps 30,000 cps
Specific Gravity 1.30 1.30 1.30
Work life at 25°C 35 minutes 45 minutes 7 minutes
Durometer shore A, 24 hour 24 24 24
Tack-free time 4-6 hours 6-8 hours 45-60 minutes
Demold time 12-16 hours 16-24 hours 4-6 hours

Cured Properties
3 Days @ 25°C
Durometer, Shore A 28
Tensile Strength 500 psi
Elongation 400%
Tear B 140 ppi
Linear Shrinkage <0.3%
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