Silicone Rubber A+B RTV2 White Liquid



Basic Info.

Model NO.
MCSIL-2030 silicone rubber
Mixing Ratio
100:2 / 100:3 / 100:4 / 100:5
Mixed Viscosity
24000-25000 Cps ( Adjustable )
Working Time
30-40 Mins
Curing Time
4-6 Hours
28-30 Shore a
Tear Strength
30 N/mm
Tensile Strength
3.8 MPa
Shelf Life
12 Months
Transport Package
20kg/Drum, 25kg/Drum or 200kg/Drum
HS Code
Production Capacity

Product Description

High Strength RTV2 White Liquid Silicone Rubber for Molds
Item No.Properties before curingCuring
Part APart B Part A+ Part BPot life at 250CDe-molding Time
at 25ºC
MCSIL-2030WhiteClear100:225000±20000 cps30-40 mins4-6 hours
Properties after curing 24 hours
Shore A
Tear strengthTensile StrengthElongation break (%)Linear Shrinkage
3028-30 N/mm3.8 Mpa450-5000.2-0.4%

Brief Introduction of RTV2 silicones for decorative concrete molds

RTV2 silicone rubber is a two component material, and it consist of Part A base silicone and Part B curing agent. When the two parts mix together and pour or brush on a object, the silicone base and curing agent can cure to be a silicone mold at room temperature; And 24 hours later, the silicone mold can be released from the object, and then the silicone mold can be poured into the following material to copy: Plaster, polyurethane, PU, GRC, cement, resin, polyester, wax etc…

Procedures of RTV2 silicones for decorative concrete molds

1. Make sure the surface of the original is clean and free of loose material.
2. Weight 100 Part A base and 2 parts of CA30 Curing Agent in a clean container.
3. Stir Part A base silicone before use thoroughly, as filler separation may occur upon prolonged storage.
4. Mix Part A and Part B evenly until the CA30 completely dispersed in the base.
5. Pour the mixed Part A base silicone and CA-30 curing agent as soon as possible onto the original
6. De-mold after 24 hours, it is will improve the replicate times of silicone mold.

Note: It is strongly recommended that entrapped air be removed in a vacuum chamber, allowing the mix to completely expand and then collapse. After a further 1-2 mins under vacuum, the mix should be inspected and can be used if free of air bubbles. A volume increase of 3-5 times will occur on vacuum de-airing the mixture. So a suitably large container should be chosen.