Stobicast® L & M

Polyurethane Potting Compounds for Electrical Encapsulation

Stobicast® L and Stobicast® M polyurethane potting compounds are widely used and serve as an ideal insulation material for the industrial production of electrical components. They are suitable for a broad range of applications such as transformers, capacitors, electromagnetic interference filters, circuit boards, sensors, cable couplers, LED’s and many other products.

Various Stobicast® L and Stobicast® M products meet the international norms and approvals. Polyurethane allows for extensive customization of many physical parameters including gel time, pot life, colored and transparent versions, heat conductivity, elasticity under cold temperatures, adhesion and elongation at break.

Why use Stobicast® L and Stobicast® M polyurethane products in your electronic components?

  • Waterproofs the components.
  • Protects from dust, chemicals, and foreign objects.
  • Electrical insulation.
  • Protects against vibration and impact to ensure components are secure.
  • Improves heat dissipation from hot components.

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Stobicast® L & Stobicast® M Products

The product listing below is only a sample of products in the Stobicast® L & Stobicast® M portfolio and may be produced in select locations. Let us help you find – or develop – the perfect product for your application. Please call us or use the ‘Contact Us’ page on this website for product selection assistance.

Stobicast® L 780

Two-component hard-flexible casting compound with high impact strength and resistance to water, transformer oil, gasoline, and other chemicals. This product is designed for applications such as transformers, coils and capacitors. UL 94 V-0 recognized and has a RTI of 130° C.

Stobicast® L 781

Two-component hard-flexible casting compound with high impact strength and resistance to water, transformer oil, gasoline, and other chemicals. This product is designed for applications such as transformers, coils and capacitors. UL 94 V-0 and V-2 recognized and has a RTI of 130° C.

Stobicast® L 796

Two-component elastic casting compound with high impact strength and resistance to water, transformer oil, gasoline, and other chemicals that provides high thermal conductivity. This product is designed for applications such as transformers, coils and capacitors and has a RTI of 130° C.

Stobicast® M 598

Two-component casting compound with high impact strength and resistance to water, transformer oil, gasoline, and other chemicals. This product is designed for applications such as transformers, coils and capacitors and is UL 94 V-0 recognized.

International Norms and Standards in the Electrical Industry

  • UL 94: V-0, V-1, V-2 and HB (flame retardant behavior)
  • NF F 101/102: I3/F1 (fire protection in railcars)
  • IEC 60695: GWFI, GWIT (glow wire test)
  • UL 746 B: RTI 130 °C (heat resistance)
  • UL 1446: Electrical insulation systems class F and B
  • UL 810: Capacitors
  • UL 1283: Electromagnetic interference filters
  • DIN 61558: Transformers
  • IEC 60335: Household appliances standard
  • VDE 0291: Cable fittings IEC 335-1 (ball pressure test)
  • RoHS (hazardous substances)
  • WEEE (waste guideline)
  • TLV (scrap vehicle guideline)