17TC5140-G_SDS.pdf

H|5materials SILICONE CASTING RUBBERS
By BJB Enterprises. Inc.
An ISO-9001 Certified company
ee
TC-5140 A/B
40 SHORE A TRANSLUCENT SILICONE RUBBER
TC-5140 A/B is a room temperature, addition/platinum curing silicone rubber designed for making molds and parts. Featuring
exceptional tear strength, low viscosity, 1:1 mix ratio, and a quick demold time, this system is user friendly while producing
high quality finished products. When used to make molds, the TC-5140 A/B is translucent enough to see through when casting
into the mold cavity. For making parts, this system is easily pigmented with BJB s 8100 Series Silicone Pigments.
e High Tear Strength Fast Cure
Translucent/Easily Pigmented Gaskets and Parts
e Low Viscosity Flexible Molds
PHYSICAL PROPERTIES RESULTS
Hardness, Shore A 4045
Density (g/cc) 1.164
Cubic Inches per Pound 24.11
Color/Appearance Colorless/Translucent
Tensile Strength (psi) 1,060
Tensile Modulus (psi) 375
Elongation (%) 420
Tear Strength (pli) 85
Shrinkage (in/in) linear 0.007-0.008
Dielectric Constant, 1 MHz 3.37
Dissipation Factor, 1 MHz 0.0126
*Note: Reported physical properties are based on test specimens cured 24 hours at room temperature.
+Shrink test specimens are cured for 7 days at room temperature.
HANDLING PROPERTIES : if Part A 5 Part B ae
Mix Ratio by weight 100
Mix Ratio by volume [ t00t i *@zY 100
Specific Gravity @ 77 F (25 C) 1.144
Color Colorless
Viscosity (cps) @ 77 F (25 C) Brookfield 7,800
Mixed Viscosity (cps) @ 77 F (25 C) Brookfield 6,800
Work Time, 100g mass @ 77 F (25 C) 30-40 minutes
Gel Time 50 60 minutes
Demold Time @ 77 F (25 C) 3-4 hours
Properties above are typical and not for specifications.
TC-5140 A/B Page 1 of 2 Date: 07/12/2022
For more information call BJB Enterprises, Inc. (714) 734-8450 Fax (714) 734-8929
www.bjbenterprises.com