Description
PRODUCT DESCRIPTION
QM 140 is a two-component, room temperature, condensation cure silicone material. The cured rubber has excellent mechanical properties and good 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. KEY FEATURES High tear strength Low viscosity Fast demold time Excellent dimensional stability The standard catalyst for QM 140 is QM Cat 140. Additional catalysts include QM Cat 140 Clear, various thixotropic catalysts and QM Cat Clear FG* for indirect food contact applications.
| Packing | Weight | Mix Ratio |
| Gallon Pail Kit | 11 lbs | 10:1 |
| 5 Gallon Pail Kit | 44 lbs | 10:1 |
| 55 Gallon Drum Kit | 550 lbs | 10:1 |
Technical data sheets, and MSDS are available in the Technical Library. *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 furniture and picture frame replication
| Uncatalyzed Properties | |
| Base Appearance | Beige |
| Base Viscosity, cps | 50,000 |
| CATALYST | QM CAT 140 |
| Color | Purple |
| Viscosity, cps | 250 |
| Specific Gravity, g/cm2 | 1.03 |
Catalyzed Properties
| PROPERTY | QM CAT 140 |
| Catalyzed Color | Light Purple |
| Catalyzed Viscosity, cps | 37,000 |
| Specific Gravity, g/cm2 | 1.13 |
| Pot Life(2)(minutes) | ~45 |
| Tack-Free Time | 4 to 6 hours |
| Demold Time | 12 to 16 hours |
TYPICAL CURED PROPERTIES (3 DAYS @ 25C)
| Durometer, Shore A | 38 to 42 |
| Tensile Strength, psi | >650 |
| Elongation, % | ~300 |
| Tear B, ppi | >160 |
| Linear Shrinkage, % | <0.3 |
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