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Maxtech SI8135 Two Component  Silicone Adhesives for Potting Electronics

Product Description

SI8135 A/B is suitable for potting protection of various components. It can be deep-cured, and the two components have good fluidity after mixing. The operating time can be adjusted according to the temperature of the curing agent. There is no need to use other primers before use, it has a good bonding effect to most materials, and is suitable for fixing accessories, waterproofing, dust proofing, and preventing leakage.

∎Key Features

  1. ●Two-component liquid silicone rubber, condensation and dealcoholization type

  2. ●Low viscosity, easy processing, strong operability

  3. ●Low hardening shrinkage, no corrosion and stress

  4. ●Excellent high-temperature electrical insulation and stability

  5. ●Excellent adhesion

  6. ●Good waterproof and moisture resistance

∎Typical Applications

●Automotive electronics, modules

●Various sensors

●Power control module

● solar junction box

●LED to shoot the light, wall wash lights, strip lights, LED fluorescent lamp

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Thermally Conductive Encapsulants & Potting Compounds
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Thermally Conductive Silicone Encapsulants
Thermally Conductive Potting Compounds
Thermally Conductive Adhesives
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Thermally Conductive Silicone Encapsulants
Thermally Conductive Silicone Adhesives & Potting Compounds
Thermal Potting Compound
Thermally Conductive Cure-in-Place Potting
thermally conductive silicone encapsulant
thermally conductive silicone potting compound for electronics
Thermally Conductive Silicone - Electronic Devices & Potting
Grey Thermally Conductive Silicone Encapsulant
Silicone Thermally Conductive Encapsulants
Thermally Conductive Potting Compounds
white pouring sealant
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Potting Silicone
White Silicone Sealant Paste for Potting
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Silicone sealant white
Potting Compounds & Encapsulants
potting & encapsulating compound
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White Silicone Potting Compound ...
WHITE POTTING FOR LED of silicone & epoxy
Potting and Encapsulation Applications
Potting Compound for Electronics
Two part Thermal conductive silicone potting material
Thermally Conductive Silicones - Adhesive
Thermally Conductive Potting Compounds
Thermally Conductive Silicone Encapsulating
silicone elctronic potting compounds silicone
Thermally Conductive Silicone Potting

∎Technical Data Table

TESTING ITEM                           TESTING STANDARD                     Part A             Part A                Part B(B1)                           Part B(B2)

Composition                                    A+B                                                  A1+B1       A1+B2

Color                                            Visual inspection                                    black fluid                                             Colorless fluid

Viscosity, cps , 25℃                  GB/T 10247-2008                                       5000±1000                                           100

Density,g/cm3, 25℃                GB/T 15223-1994                                         1.35±0.05                                              0.98

Curing agent                                  A with B                                               B1                  B2


Mixture ratio                             Weight Ratio                                                         A:B = 100:10

Viscosity of mixture,4#rotor,cps , 25℃   GB/T 10247-2008                     2,500            2,500                                      --

Operation time,mins , 25℃     GB/T 10247-2008                                      30-40           10-20                                       --

Tack Free Time, 25℃             GB/T 10247-2008                                        60-120         20-30                                      --

Characteristics after curing        

Cured appearance                  Visual inspection                                    Black elastomer   Black elastomer                    --

Hardness, Shore A                GB/T 531-2008                                              40±5             40±5                                      --

Tensile strength, Mpa          GB/T 528-2009                                                1.5                 1.5                                       --

Shear strength, MPa,Fe-Fe    GB/T 7124-2008                                            0.7                  0.7                                      --

Linear expansion coefficient,ppm   HGT 2625-1994                                                 120                                           --

Dielectric strength ,kV/mm, 25℃   GB/T 1695-2005                                                   ≥20                                           --

Volume resistance,DC 500V, Ω·CM   GB/T 1692-92                                                1.0×1014                                  --

Loss factor(1 MHz)              GB/T 1693-2007                                                              <0.008                                    --

Dielectric constant(1 MHz)        GB/T 1693-2007                                                       <3.00                                       --

Flame retardant grade                  UL94                                                                         HB                                            --

Long time Application temperature,  ℃    GBT 20028-2005                                      -50~150                                     --

PS: The operating time is tested based on the amount of glue 118g.

All data of the curing state are measured after 7 days of curing under the conditions of 25℃ and 55%RH

How to use ?
  1. Mixing uniformity in the packing before using, as there’s part of filler sedimentation happens during storage.

  2. Mix Part A and Part B by 100:10 mass ratio, after evenly mixed, pouring directly into the components or modules as per requirements. It’s recommended to slowly pour along the walls of the implements, so as to reduce the bubbles happens.

  3. Still the potted component to let out the bubbles. If possible, customers can vacuum and degas the mixed glue before potting. It can be cured directly at room temperature, usually within 3-4hr, the glue layer is elastic and can be turned over or handled.

  1. Vacuum defoaming can improve the performance of the cured products.

  2. Seal the remaining products tightly after use.

  3. The low temperature will slow the curing speed, overheating will lead to curing speed too fast. Keep a constant temperature in the workshop is recommended.

  4. It's hard for SI8135 to cure if contact with sulfur, amine, organotin.


Packing Specification

  1. Part A:20kg/drum;  

  2. Part B: 5kg/pot

  3. Part A:200kg/drum; 

  4. Part B: 20kg/drum

  5. Customized Packing

  6. SI8130W  White,A0104181+B0104182

  7. SI8130W  White fast,A0104183+B0104182

  8. SI8130B   Black,A0104180+B0104182

  9. SI8135B   Black,A0104170+B0104171

∎Transport &Storage

When stored at or below -5~30°C in the original unopened containers, this product has a usable life of 12 months from the date of production. Sampling test is necessary for products which exceed shelf life before taking use. Beyond this date, Maxtech Chemical no longer guarantees that the products meet sales specifications.


It’s non-dangerous goods, can be transported as normal chemicals, CAUTION leakage during transport.



High thermal conductivity potting compound is used to create a protective barrier around high-heat electrical appliances, components, and motors to prevent overheating. Thermal potting compounds are also used for potting electrical circuits and filling voids to protect fragile components from corrosive agents, water, moisture, vibration, shock, and chemicals.

High thermal conductivity potting compounds are used for a variety of high-temperature applications. Electronics potting and encapsulating compounds by Maxtech are formulated for consistent material performance, with excellent dielectric properties, electrical insulation resistance, thermal conductivity, thermal shock resistance, mechanical strength, adhesion, hardness, cure speed, and chemical resistance.

High thermal potting compounds for electrical equipment that may generate a lot of heat. For example, motors can overheat and cause damage to the rest of an electrical or mechanical device. Thermal potting compounds have a wide operating temperature range, which can prevent motors from overheating.

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