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. 199-1395
BrandRS PRO
$38.81
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
$45.39
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. 160-8481
Mfr. Part No.UR5041RP250G
$55.36
Each
units
- PUR Pack 250 g Oxidation Resistance 24 h 85 Shore A - Black +125°C -60°C - - -
RS Stock No. 166-844
Mfr. Part No.UR5097RP250G
$60.97
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. 448-6830
Mfr. Part No.7718-12-250-BKP-TP10-RS
$22.85
Each
units
- Polyamide Stick - - - - - Black +135°C -10°C - - -
RS Stock No. 448-0236
Mfr. Part No.740010360
$46.63
Each
units
- Silicone Cartridge 310 ml - 24 h 24 Shore A 0.2W/mK White +230°C -50°C - - -
RS Stock No. 832-4723
Mfr. Part No.WONDER-F280
BrandRaytech
$53.80
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
$172.65
Each
units
- Gel Kit 1000 g Dielectric, Low Viscosity, Sealing Characteristics, Thermal Conductivity - - - - - - - >20kV/mm -
RS Stock No. 283-460
Mfr. Part No.QSIL-553
$110.32
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. 458-743
Mfr. Part No.QSIL 550
$88.17
Each
units
- Silicone Dual Cartridge 250 g Low Flammability, Thermal Conductivity 24 h 55 Shore A 0.37W/mK Grey +275°C -50°C - - -
RS Stock No. 458-765
Mfr. Part No.QSIL 216
$114.35
Each
units
- Silicone Dual Cartridge 250 g Low Flammability 20 h 40 Shore A 0.18W/mK Transparent +204°C -60°C - - -
RS Stock No. 448-0286
Mfr. Part No.740010410
$85.34
Each
units
- Silicone Cartridge 75 ml Electrical Resistance 24 h 52 Shore A 0.6W/mK Black +220°C -50°C - - -
RS Stock No. 164-292
Mfr. Part No.UR5044RP250G
$51.91
Each
units
- PUR Pack 250 g Reenterable 24 h 40 Shore A, 60 Shore A, 80 Shore A 0.25W/mK Blue +120°C -70°C - - -
RS Stock No. 121-3879
Mfr. Part No.WATT
BrandRaytech
$12.83
1 Set
Set(s)
- - Blister 30 x 38 x 26 mm - - - - Transparent +90°C - - - -
RS Stock No. 160-8497
Mfr. Part No.UR5528RP250
$64.89
Each
units
- PUR Pack 250 g - 24 h 57 Shore D 0.245W/mK Black +125°C -50°C - - -
RS Stock No. 703-1228
Mfr. Part No.Magic-rubber
BrandRaytech
$142.22
Each
units
- Rubber Kit 500 g Dielectric, Elastic Properties, Mechanical Properties, Thermal Conductivity 10 min - - - - - - >20kV/mm Odourless
RS Stock No. 121-3883
Mfr. Part No.WATTMP
BrandRaytech
$170.91
1 Set
Set(s)
- - Pack 30 x 38 x26 mm - - - - Transparent +90°C - - - -
RS Stock No. 121-3880
Mfr. Part No.KELVIN
BrandRaytech
$16.84
1 Set
Set(s)
- - Blister 45 x 45 x 30 mm - - - - Transparent +90°C - - - -
RS Stock No. 121-3877
Mfr. Part No.ISAAC4
BrandRaytech
$29.86
1 Set
Set(s)
- - Blister 30 x 24 x 23 mm - - - - Transparent +90°C - - - -
RS Stock No. 448-0242
Mfr. Part No.740010370
$49.22
Each
units
- Silicone Cartridge 310 ml - 1 h 33 Shore A 0.2W/mK Translucent +220°C -50°C - - -
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