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. 146-6593
BrandRS PRO
MYR114.46
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. 283-460
Mfr. Part No.QSIL-553
MYR325.71
Each
units
- Silicone Dual Cartridge 250 g Thermal Conductivity 24 h 32 Shore A 0.68W/mK Grey +260°C -55°C - - -
RS Stock No. 448-0236
Mfr. Part No.740010360
MYR120.18
Each
units
- Silicone Cartridge 310 ml - 24 h 24 Shore A 0.2W/mK White +230°C -50°C - - -
RS Stock No. 703-1238
Mfr. Part No.100210-mag
BrandRaytech
MYR147.47
Each
units
- Plastic Dual Cartridge 210 g Reenterable - - - Blue - - - >20kV/mm -
RS Stock No. 832-4723
Mfr. Part No.WONDER-F280
BrandRaytech
MYR146.28
Each
units
- Silicone Cartridge 280 ml Even Suitable For Standard Boxes, Ideal For Filling Wonder Joint Enclosures, No Waste - No Shelf Life, Once Open, It Does Not Solidify - - 0.2W/mK Green +200°C -60°C - >23kV/mm -
RS Stock No. 703-1231
Mfr. Part No.M agic-Gel
BrandRaytech
MYR478.67
Each
units
- Gel Kit 1000 g Dielectric, Low Viscosity, Sealing Characteristics, Thermal Conductivity - - - - - - - >20kV/mm -
RS Stock No. 703-1228
Mfr. Part No.Magic-rubber
BrandRaytech
MYR348.00
Each
units
- Rubber Kit 500 g Dielectric, Elastic Properties, Mechanical Properties, Thermal Conductivity 10 min - - - - - - >20kV/mm Odourless
RS Stock No. 121-3884
Mfr. Part No.KELVINMP
BrandRaytech
MYR675.37
1 Set
Set(s)
- - Pack 45 x 45 x 30 mm - - - - Transparent +90°C - - - -
RS Stock No. 121-3883
Mfr. Part No.WATTMP
BrandRaytech
MYR442.56
1 Set
Set(s)
- - Pack 30 x 38 x26 mm - - - - Transparent +90°C - - - -
RS Stock No. 121-3880
Mfr. Part No.KELVIN
BrandRaytech
MYR47.69
1 Set
Set(s)
- - Blister 45 x 45 x 30 mm - - - - Transparent +90°C - - - -
RS Stock No. 915-9732
Mfr. Part No.Scotchcast 8882 Easy dispenser 250
Brand3M
MYR159.41
Each
units
- - - - - - - - - - - - - -
RS Stock No. 183-1671
Mfr. Part No.Fred
BrandRaytech
MYR65.37
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 166-844
Mfr. Part No.UR5097RP250G
MYR139.93
Each
units
- PUR Pack 250 g Encapsulating Compound, Flame Retardant, Thermal Conductivity 24 h 85 Shore A 0.65W/mK Black +110°C -40°C - - -
RS Stock No. 183-1650
Mfr. Part No.Happy0
BrandRaytech
MYR21.813
Each (In a Pack of 4)
units
- - Blister - - - - - Orange +90°C - - - -
RS Stock No. 183-1667
Mfr. Part No.Bravo3-6
BrandRaytech
MYR60.70
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 183-1652
Mfr. Part No.Happy2
BrandRaytech
MYR42.69
Each
units
- - Blister - - - - - Yellow +90°C - - - -
RS Stock No. 121-3879
Mfr. Part No.WATT
BrandRaytech
MYR52.70
1 Set
Set(s)
- - Blister 30 x 38 x 26 mm - - - - Transparent +90°C - - - -
RS Stock No. 918-4992
Mfr. Part No.832TC-450ML
MYR306.50
Each
units
- Epoxy Can 450 ml Thermal Conductivity 2 → 96 h - - Black +140°C -30°C Acetone, Ethyl Lactate, Hydrocloric Acid, Isohexanes, Isopropyl Alcohol, Mineral Spirits, Xylene - -
RS Stock No. 183-1661
Mfr. Part No.Nano3
BrandRaytech
MYR23.848
Each (In a Pack of 4)
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 183-1659
Mfr. Part No.Ohm
BrandRaytech
MYR49.03
Each
units
- - Blister - - - - - - +90°C - - - -
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