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Liquid Silicone Rubber (LSR) for Silicone Plugs

Basic Model:

Product Description
LIM1520-50A/B is a two-part liquid insulated silicone rubber for injection molding processes. This silicone rubber is particular developed for the manufacturing of silicone plugs. All LSR are platinum cured materials which are mixed in a 1:1 ratio by weight.

Main Application
The elastomeric material is perfect for making silicone plugs

Two parts of the liquid silicone rubber (A and B) are respectively stored in 20kg or 200kg barrels. Before being pumped into the molding chamber, they are precisely weighed by special weighing equipment and uniformly mixed in a static mixer by a ratio of 1:1. After mixed, A/B mixture can be stored for 7 days under 23℃. If the molding machine will stop for a long time, the pumping pipe should be cleaned.

20kg/barrel or 200kg/barrel

Typical Properties of the Liquid Silicone Rubber
Before curing Physical properties Test method Unit LIM1520-50A/B
Appearance (Color) A: Transparent;
B: Red
Solid content % 100
Viscosity DIN53019 mPa.s (80-90) x 104
After curing SHORE Hardness D2204 A 51 ~ 53
Tensile strength D412 MPa ≥8
Elongation at Break D412 % ≥500
Tear strength D624B KN/m > 28
Volume resistivity IEC60093 Ω.cm 1.0 x 1015
Resilience IEC60250 % ≥ 60
Linear shrinkage JISK 6301 % ≤2.2
Tension set D412 DIE C % ≤ 4.5

Storage: Store the electrically conductive rubber in an indoor dry and ventilated place at room temperature, and avoid direct sun exposure. It can be stored for 12 month
Viscosity is measured using NDJ-79 rotary viscosimeter
Molding condition: High pressure curing for 10 minutes at 140℃
Post curing condition: Curing for 2 hours at 200℃
Above parameters are only used for reference. They can not be used as a standard. For specific process conditions, you can refer to our product specifications or contact our engineering department.

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