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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Main Raw Material: unsaturated polyester resin
  • Usage: Appliance Paint, Electrical Insulating Varnish
  • Application Method: pouring

Packaging & Delivery

Packaging Details R-380 casting resin is 20kg/drum with steel drums. 380-H and 380-C are 25kg/drum and 20kg/drum with plastic drums separately. They can be stored for 2 months in dry and cool room.


R-380 casting resin is composed of unsaturated polyester resin, curing agent, accelerant, flame retardant and inorganic filler etc., and is divided into R-380 resin, 380-H hardener and 380-C catalyst three parts. It always be used in concert with quartz sand (silica sand) to reduce the cost. The heat-resistant grade is B, and R-380 complies with RoHS environmental protection requirement.



Fast cure in room temperature, easy to use, good surface aridity, low cost and solid shrink property, excellent self-extinguishment and insulation capacity.



R-380 casting resin is an excellent insulating stuffing for ballast of high-pressure mercury lamp and fluorescent lamp.


Qualification (as the Q/R 101-2010 company standard)


Test Item

Test Method





Test tube method



Ivory viscous liquid


Colorless transparent liquid


Blue to purple transparent liquid


Viscosity (resin part)

4#cup 23±1°C




Fire resistance

FV method




Electric strength

Room temperature




Volume Resistivity

Room temperature



After immersion in water











Established in 1992, Rota Group is one of the most professional manufacturers of  impregnating varnish, mica tape, potting resin and embedding resin in China. Most products have been approved by ISO9001, 14000, UL, TUV, FDA, RoHS and REACH, widely used in high-voltage motors, wires and cables, household appliances, industrial pumps, and metallurgy equipments etc. We win the trust of the majority of well-known manufactures, like BOSCH, BLACK & DECKER, Fujitsu,  Shibaura, REGAL, Siemens, EPCOS, N.P.V. and so on.















 Professional quality, creating value for customers. Rota Group lead in the aspects of industry scale, product technology and innovation capacity, we will provide quality products and professional services for you. Welcome you!

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China (Mainland) | Manufacturer, Trading Company
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