Factory price high quality UL94v0 fire sealant rtv2 silicone compound for electronic power supply insulation

FOB Reference Price:Get Latest Price
US $6-10 / Kilograms | 800 Kilogram/Kilograms 10kgs for Ex-W FY Factory in New Taipei City, Taiwan (Min. Order)
Report Suspicious Activity
Quick Details
Mixing ratio:
shore A 60
Electronic potting
Product name:
Liquid silicone rubber
Item name:
Low price
UL-94V0, RoHS, REACH, ISO-9001, SGS
100 Ton/Tons per Month
Packaging & Delivery
Packaging Details
10kgs, 15kgs, 20kgs
Lead Time :
5-15 working days

Factory price high quality UL94v0 fire sealant rtv2 silicone compound for electronic power supply insulation


Custom Epoxy Resin Formulator and Electronics Potting Compound Manufacture

FONG YONG CHEMICAL CO., LTD. is a custom formulator of epoxy resin, polyurethane  resin and silicone compound, operating since 1983. Fong Yong is offering the most competitive prices on potting compounds and CUSTOM  formulation services in resin manufacturing industry. We'll perfectly match YOUR product outcome needs.

FONG YONG electrical potting compounds are based on one and two-component epoxy resin and silicone compound chemistries. They are solvent-free liquids, and designed to efficiently fixture and encapsulate electronic components, while also protecting them from adverse environmental, mechanical, thermal and electrical stresses. They also provide excellent electrical insulation to extend product life cycles and enhance the performance of potted electrical and electronic devices.

FONG YONG potting compounds are available in a wide variety of viscosities, mix ratios, electrical and physical properties. Custom  formulation is always available to meet your specific electronic potting needs. Our soft epoxy and silicone compound can also be removed in case electrical repair or modification is needed.


Silicone Potting Compound


 FONG YONG silicone-based electronic potting compound are formulated with specific blends of liquid silicone compound rubber for electronics, curing agents and modifiers to provide the best application properties for meeting our customer's potted device performance specifications. The key features of our liquid silicone rubber resin potting compounds include:

- Low cost

- Low shrinkage

- Strong adhesion

- UL recongized potting

- Excellent mechanical properties

- Good work life

- Room or elevated cure temperature

- Excellent moisture and chemical resistance

Product Description

                  (Flame Retardant Silicone for Potting)
SFY-131 is a two-part with good flow ability addition curing RTV2 rubber silicone compound. It is mainly designed for electrical and electronic potting, such as power supplies, connector, sensor, relay, high voltage resistor pack, and LED potting. It is suitable for batch processing or automated dispensing. With different colors for better distinction, base is black or dark grey and curing agent is white. It can be cured in a 1:1 ratio by weight or volume either at room temperature or elevated temperature for faster processing. The cured mixture is a black flexible elastomer. The elastomer has excellence in electrical properties and waterproof, self-extinguishing (UL94V0 approved), and weather resistance. Those properties are not significantly affected by the changes of temperature.

1. No corrosive and no cure by-product.
2. Equal amount of mixing ratio, good fluidity, easy processing.
3. Easy distinction of the two parts and inspection of complete mixing.
4. No significant exotherm or shrinkage during curing.
5. Flexible schedule, of curing can be cured at room temperature (R.T.) or at elevated temperature.
6. Very stable to changes of temperature, stability over wide temperature range (-50 to 200 oC).
7. UL 94V0 approval (E120665).
8. Excellent dielectric properties for maintaining and protection of existing electrical insulation requirements.
9. Excellent weather resistance and waterproof property for protection from moisture and dust contamination.
10. Relative easier removal benefits to repair of electrical/electronic devices.
11. Green environmental protection materials.

Typical Properties:

                                                                                                         Base                                Curing agent

Appearance                                                                     Black or dark grey liquid                      white liquid

Viscosity (cps, 25oC)                                                                     3,500                                       3,500

Mixing Ratio                                                                                        1                                              1

Pot life (25oC, 100g)                                                                                           60 min

Cure Condition (100 g)                                                                    80 degree C x 1 hour or RT 24 hours

Shrinkage (%)                                                                                                     0.2

Hardness (Shore A)                                                                                            60

Water Absorption (24hrs, %)                                                                              < 0.05

Tensile Strength (psi)                                                                                         220

Elongation (%)                                                                                                   125

Packaging & Shipping

Packaging:   10kgs, 15kgs,20kgs

Shipping: DHL, TNT, UPS, FEDEX, Maring Shipping

Company Information



Our Services

 1. Fast delivery.

 2. Multi payment methods.

 3. Technical support.

 4. Instant Q&A service.

 5. Customer-made prdouct available.




 1. How to operate the electronic potting silicone rubber?


1). RTV-1 electronic potting silicone rubber: handled with guns, needle infection or directly infused
 2). RTV-2 electronic potting silicone rubber: stir---vacuum and de-air---perfusion. 
The mixing ratio of our electronic potting silicone rubber, HY210, HY215 is 10:1, condensation mold silicon rubber can be operated like this.
 3). Addition type electronic potting silicon rubber: the mixing raito is 1:1 or 10:1.
If in10:1, it is normally operated by labor, because it is easy to cause uneven curing if by machine,.
If 1:1, it is normally operated by machine, suitable for mass industrial production and helpful for time saving, labor cost saving and efficiency increasing.


2. Does SFY-131 contain any solvents?
No. SFY-131 does not contain any kind of solvents. SIFEL is naturally liquid type without any solvent.
3. What are the current applications for SFY-131?
SFY-131 is popular in automotive industries as well as in other industries where weather resistance, chemical resistance with high and low temperature required.
4. What is the thermal conductivity of SFY-131?
It is 0.5 W/m.K.
5. Does the outside environment affect silicone?
No. Silicone is not affected by extremes of weather – hot, cold, dry, wet, or humid. It also has excellent resistance to UV and ozone degradation.
6. How do I store silicone compounds?
Silicone compounds should be stored in a dry environment away from direct sunlight and heat, and at a temperature of less than 25C.
7. Is silicone toxic?
Silicone is considered to be a very safe polymer with virtually no toxic effects in most environments. Also, as silicone is not considered as hazardous waste it can be disposed of in accordance with the local regulations regarding waste disposal.