Potting Compounds

Potting compounds are a general-purpose type of sealant that can offer environmental, mechanical and physical protection to circuit boards and electronic assemblies. Used in electronics, potting is a process of filling a complete electronic assembly with a solid or gelatinous compound. The potting compound, once applied, cured and hardened encases your electronics in a solid mass providing a barrier which provides protection from moisture, vibration, thermal or physical shock and general contamination. The mechanical protection enables the components to maintain high performance under extreme conditions. Thermosetting plastics or silicone rubber gels are often used.

Types of compounds:

Epoxy Potting Compounds - Epoxy potting compounds generally have better adhesion, high temperature resistance, and chemical resistance. Epoxy systems have better adhesion to a wide variety of substrates and typically do not need primers. They are easy to use and are predicable. They have good high temperature resistance up to 400°F

Urethane Potting Compounds - Urethane potting compounds generally have better flexibility, elongation, and abrasion resistance. Since they can have Tg below -40°C they are a good selection for SMT PC board potting. Their gel time can be easily changed with an accelerator without changing the properties

Silicone Potting Compounds - Silicone potting compounds and encapsulating materials are also soft, flexible, and have better elongation. Silicone materials also provide the widest operating temperatures. Specially formulated silicone potting compounds can operate at below -100°C and most silicone materials can handle 200°C temperatures.

Acrylic Potting Compounds - Acrylic potting compounds are UV and heat hardening materials. They benefit from very fast hardening, adequate chemical resistance and are clear in appearance


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Description Price Trade Name Product Material Package Type Package Size Special Properties Cure Time Hardness Thermal Conductivity Colour Maximum Operating Temperature Minimum Operating Temperature Chemical Composition Dielectric Strength Odour
RS Stock No. 851-044
BrandRS PRO
£8.07
Each
Units
- Epoxy Dual Cartridge 50 ml - 12 h - - Black +50°C -20°C 2-Piperazin-1-Ylethylamine, Nonylphenol - Amine-Like
RS Stock No. 199-1402
BrandRS PRO
£5.11
Each
Units
- Epoxy Pack 50 g Flame Retardant 24 h 85 Shore D 0.45W/mK Black +120°C -40°C 3 Dimethylbenzene, Epoxy Resin, Formaldehyde, Neodecanoic Acid Glycidyl Ester, Polymer with 1 16.6kV/mm Characteristic
RS Stock No. 199-1418
BrandRS PRO
£6.12
Each
Units
- Epoxy Pack 100 g Flame Retardant 24 h 85 Shore D 0.45W/mK Black +120°C -40°C 3 Dimethylbenzene, Epoxy Resin, Formaldehyde, Neodecanoic Acid Glycidyl Ester, Polymer with 1 16.6kV/mm Characteristic
RS Stock No. 199-1424
BrandRS PRO
£8.63
Each
Units
- Epoxy Pack 250 g Flame Retardant 24 h 85 Shore D 0.45W/mK Black +120°C -40°C 3 Dimethylbenzene, Epoxy Resin, Formaldehyde, Neodecanoic Acid Glycidyl Ester, Polymer with 1 16.6kV/mm Characteristic
RS Stock No. 199-1430
BrandRS PRO
£12.53
Each
Units
- Epoxy Pack 500 g Flame Retardant 24 h 85 Shore D 0.45W/mK Black +120°C -40°C 3 Dimethylbenzene, Epoxy Resin, Formaldehyde, Neodecanoic Acid Glycidyl Ester, Polymer with 1 16.6kV/mm Characteristic
RS Stock No. 199-1468
BrandRS PRO
£17.48
Each
Units
- Epoxy Pack 500 g - 24 → 48 h 80 Shore D - Amber +120°C -40°C Epoxy Resin 12kV/mm -
RS Stock No. 552-668
BrandRS PRO
£8.56
Each
Units
- Epoxy Pack 250 g Chemical Resistance, Water Resistance 24 h 80 Shore D 1.26W/mK White +130°C -40°C [(2Ethylhexyl)Oxy]Methyloxirane, 3-Epoxypropoxy)Phenyl]Propane, Bis[4-(2, Epoxy Resin, Zinc Oxide 10kV/mm -
RS Stock No. 199-1452
BrandRS PRO
£19.22
Each
Units
- Epoxy Pack 1000 g Flame Retardant 24 h 85 Shore D 0.45W/mK Black +120°C -40°C 3 Dimethylbenzene, Epoxy Resin, Formaldehyde, Neodecanoic Acid Glycidyl Ester, Polymer with 1 16.6kV/mm Characteristic
RS Stock No. 199-1395
BrandRS PRO
£11.66
Each
Units
- PUR Pack 500 g Flame Retardant 24 h 75 Shore A - Grey +110°C -40°C Calcium Carbonate 12kV/mm -
RS Stock No. 195-978
BrandRS PRO
£13.58
Each
Units
- PUR Pack 250 g Low Penetrating Viscosity 24 h 12 Shore A 0.2W/mK Transparent Yellow +100°C -60°C 4'-Di-Isocyanate, Diphenylmethane-4 18kV/mm -
RS Stock No. 422-8218
BrandRS PRO
£9.50
Each
Units
- Epoxy Pack 250 g Environmental Protection 24 h 85 Shore D - White +120°C -40°C - - Characteristic
RS Stock No. 146-6593
BrandRS PRO
£17.16
Each
Units
- PUR Pack 250 g Chemical Resistance, Mark Resistance, Scratch Resistance, UV Light Resistance, Weather Resistance, Yellowing Resistance 24 h @ 23 °C, 4 h @ 60 °C 75 Shore A 0.2W/mK Transparent +120°C -40°C Polyurethane Resin 11kV/mm -
RS Stock No. 703-1231
Mfr. Part No.M agic-Gel
BrandRaytech
£59.00
Each
Units
- Gel Kit 1000 g Dielectric, Low Viscosity, Sealing Characteristics, Thermal Conductivity - - - - - - - >20kV/mm -
RS Stock No. 448-0286
Mfr. Part No.740010410
£28.88
Each
Units
- Silicone Cartridge 75 ml Electrical Resistance 24 h 52 Shore A 0.6W/mK Black +220°C -50°C - - -
RS Stock No. 448-6830
Mfr. Part No.7718-12-250-BKP-TP10-RS
£9.35
Each
Units
- Polyamide Stick - - - - - Black +135°C -10°C - - -
RS Stock No. 703-1228
Mfr. Part No.Magic-rubber
BrandRaytech
£50.68
Each
Units
- Rubber Kit 500 g Dielectric, Elastic Properties, Mechanical Properties, Thermal Conductivity 10 min - - - - - - >20kV/mm Odourless
RS Stock No. 160-8481
Mfr. Part No.UR5041RP250G
£18.03
Each
Units
- PUR Pack 250 g Oxidation Resistance 24 h 85 Shore A - Black +125°C -60°C - - -
RS Stock No. 448-0179
Mfr. Part No.740010310
£119.99
Each
Units
- Silicone Dual Cartridge 1000 g Aerospace 4 h 61 Shore A 0.37W/mK Red +250°C -60°C - - -
RS Stock No. 915-9732
Mfr. Part No.Scotchcast 8882 Easy dispenser 250
Brand3M
£24.08
Each
Units
- - - - - - - - - - - - - -
RS Stock No. 164-337
Mfr. Part No.ER1448RP250G
£14.79
Each
Units
- Epoxy Pack 250 g Water Resistance 12 h 70 Shore A - Black +150°C -50°C - - -
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