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Transparent Organic Silicone Bonding Adhesive

Transparent organic silicon bonding sealant SI1338RTV SI1338 is neutral dealcoholized organic silicone bonding sealant, it is flowing moisture curable silicone. The flexible rubber after cured complie

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Transparent organic silicon bonding sealant SI1338

RTV SI1338 is neutral dealcoholized organic silicone bonding sealant, it is flowing moisture curable silicone. The flexible rubber after cured complies with the requirements of EU ROHS definitely. No corrosion (alcohols that released in the process of solidification) to PC, CU and other materials.

◆Detailed Product Description


1.One component, easy handle, fast cured

2.Excellent chemical resistance

3.Moisture, dirt and other atmospheric composition proof

4.Relieving the mechanical stress and tension that cased by machinery, heat shock and vibrate 

5.Good corona resistance and electrical insulation performance 

6.Excellent outdoor aging-resistance for 20-30 years

7.Stable mechanical and electrical properties between -60-260℃


1.Sealing LED and plastic metal shell. Fixing PCB components and wire.     

2.Waterproofing coating of delicate electronic accessories, electrical and communication equipment 

3.Potting and plugging the thin layer below 6mm,eg. small module, photoelectric display and circuit board.

◆Data Table

Testing Term

Testing standard




Before cured







GB/T 10247-2008

25℃, Pa·s

12000 ± 3000

60000 ± 10000


GB/T 15223-1994

25℃, g/cm3



Curing Speed


25℃, 55%RH,min



Fully cured


GB/T 531-2008

Shore A

22 ± 3

22 ± 3

Thermal Conductivity

GB/T 10297-1998




Elongation at break

GB/T 528-1998




Tensile Strength

GB/T 528-2009




Tensile-Shear Strength

GB/T 7124-2008

Mpa, Fe/Fe



Dielectric Strength

GB/T 1695-2005




Dielectric Wastage

GB/T 1693-2007

(1MHz) (25℃)



Dielectric Constant

GB/T 1693-2007

(1MHz) (25℃)



Volume Resistance

GB/T 1692-92

(DC500V) Ω· cm

2.00E +15

2.00E +15


1.All data above is tested under special condition (7 days after fully cured in the environment of 25℃, 55%RH).

2.In different testing conditions or with product improvement, the data you got might be different; We don’t take any relevant responsibility to the difference.

◆Operation and Attention


1.Cleaning: cleaning the surfaces that to be glued and coated, removing the rust, dust, greasy dirt and other foreign matter and substance.

2.Gluing: cutting nozzle to the required angle, extruding the liquid cement to the cleaned surface and making it well-distributed, then folding and fixing the glued surfaces.

3.Curing: placing the glued or sealed components in the air to make them cured naturally. Curing is a process that being cured from surface to the internal.The sealant will be cured at a depth of 2~4mm within 24 hours (at room temperature and 55% relative humidity), if the glue position is deeper, especially the parts that not easy to come into the air,the time that being completely cured will be longer, if the temperature is low, the curing time will also be extended. It will take more than 3 days to make 6 mm thick sealant fully cured.

Note: Using up the sealant as far as possible once opened. Edging out the cured part to make normal use if it has not been finished. Please consult PUNADE market department when using dispensing equipment. 


1.Out of the children’s reach.

2.Used in a well-ventilated place. 

3.Wash immediately with shampoo if sticking to the skin accidently.

4.Wash immediately with water for long time and keep eyes open if stick to the eyes accidently. Seeking medical advice if the stimulation last long.






a) 310ml/cartridge,25pcs/carton;

b) 100ml/cartridge,100pcs/carton;

◆Storage and Transport

1Kept sealed in cool and dry place.

2Non-dangerous. Stored and transported as normal chemicals.

3Shelf life is 12 months under 25℃.

Confirming the performance of the products that our of deadline before using.

◆Safety Operation Material

MSDS isn't included here. Please read TDS, MSDS and label carefully before operation.You can get MSDS from Sepuna or other distributors, or mail to service center, or call +86-400-882-1323.

◆Product Warranty

All product properties and application details based on information believe to be reliable and accurate. But you still need to test its property and safety before application. The advices we supply don't apply in any circumstances. Sepuna don't make assurance of any other applications outside the specification until Sepuna supply a special written guarantee. Sepuna is only responsible to replace or refund if this product is defective within the warranty period stated above. Sepuna makes it clear that will not be liable of any accidents.

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