RTV. Silicon Rubber Series Adhesives

RTV. Silicon Rubber Series Adhesives

1. Description:

Room temperature vulcanization silicon rubber series adhesives are one component, non-solvent RTV silicon rubber. The product after curing has good elasticity, good insulation sealing, and high temperature resistance properties.

2. Chemical composition

Ortho-hydroxy poly dimethyl siloxane, silicon series coupling agent

3. Major chemical structure:

CH₃

HO-[-Si-O-]_n –H

CH₃

4. Properties & Application

Name	WR-703	WR-704	WR-705	WL-705L	WR-706	WR-708
Appearance	Milky viscose liquid	Milky viscose liquid	Colorless transparent viscose liquid	Colorless transparent flowing liquid	Milky viscose liquid	White non-flowing liquid
Surface Drying Time（25°C）	30min	30min	30min	30min	30min	30min
Tensile Strength Kg/cm²	>12	>10	>5	>5	>20	>8
Temperature Resistance Range（°C）	-60~150	-60~250	-60~250	-60~250	-60~250	-60~200
Aging Resistance	Excellent	Excellent	Excellent	Excellent	Excellent	Excellent
Medium Resistance	Excellent	Excellent	Excellent	Excellent	Excellent	Excellent
Voltage Resistance	>16kv/mm	>14kv/mm	>15kv/mm	>15kv/mm	>14kv/mm	>14kv/mm
Application	Potting for wire cables, Water sealing for instruments, apparatus; Meter box adhesion; Sealing for electronic elements	Electric heating elements ends sealing, Electric plugs potting; Adhesion and sealing for instrument and apparatus	Transmitter sealing; Potting for electric elements; Electric joint moisture proof protection; Silicon controlled surface protection	Transmitter sealing; Potting for electric elements; Electric joint moisture proof protection; Silicon controlled surface protection	Machine tool sealing; Motorcycle magnetic cylinder adhesion	Refrigerator sealing; Advertising Board adhesion; Ship sealing; Electric elements anti-vibration fixing

Besides the above typical application, these series products also have excellent adhesion to all kinds of metal, glasses, cement, ceramics, plastics, nylon, cloths, and bamboo or wood products

5. Chemical Resistance Property

Days after Weight Change% Dipping liquid	1	7	30
City tap water	0.3	0.9	1.6
5%NaCl solution	0.2	0.7	1.5
10%NaOH solution	0.2	0.7	1.2
5%H₂SO₄	0.4	1.2	2.0
5%HCl solution	0.3	0.8	1.5
Kerosene	0.5	0.8	1.2

6.Application Method:

Dust and oil on the surface should be cleaned by using cloth rubbing or organic solvents, prior to use;

the adhesive needs to be uniformly coated on the applied surface or sealing ends and tightly connect together.

Air remained inside the tube should be squeezed out and the tube cap needs to be tightly closed to protect from adhesive curing.

7.7777.Storage and Transportation

1.The product belongs to non-dangerous material. It is non-toxic, non-corrosion, non-inflammable,.

Storage and transportation follow regular chemicals regulation. The storage period of time see packaging instruction.

2. Product kept tight sealing after use.

WR-70 Series RTV Silicon Rubber Gel is non-toxic, but has slightly irritation to skin and eyes.

Using gasoline etc. hydrocarbon solvents can clean non-cured silicon rubber.

8.Storage and Packaging:

1. One year shelf life stored at room temperature in sealing condition.

2. 45 or 110 grams in flexible metal tube.

*Remarks:

The above technical data are typical product data at 70% humidity and 25 degree C for customer reference only.

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WR-705