Potting Compounds

What is it?
Used in electronics potting is a process off filling a complete assembly with a solid or gelatinous compound for resistance to shock and vibration, and for exclusion of moisture and corrosive agents. 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, Very fast hardening, adequate chemical resistance and clear in appearance

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Description Price 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 Operating Temperature Range
RS Stock No. 199-1424
BrandRS PRO
HK$91.25
Each
units
Epoxy Pack 250 g Flame Retardant 24 h 85 Shore D 0.45W/mK Black +120°C -40°C Epoxy Resin, Formaldehyde, Neodecanoic Acid Glycidyl Ester, Polymer with 1, 3 Dimethylbenzene 16.6kV/mm Characteristic -40 → +120 °C
RS Stock No. 195-978
BrandRS PRO
HK$128.86
Each
units
PUR Pack 250 g Low Penetrating Viscosity 24 h 12 Shore A 0.2W/mK Transparent Yellow +100°C -60°C Diphenylmethane-4, 4'-Di-Isocyanate 18kV/mm - -60 → +100 °C
RS Stock No. 199-1402
BrandRS PRO
HK$53.37
Each
units
Epoxy Pack 50 g Flame Retardant 24 h 85 Shore D 0.45W/mK Black +120°C -40°C Epoxy Resin, Formaldehyde, Neodecanoic Acid Glycidyl Ester, Polymer with 1, 3 Dimethylbenzene 16.6kV/mm Characteristic -40 → +120 °C
RS Stock No. 703-1238
Mfr. Part No.100210-mag
BrandRaytech
HK$236.22
Each
units
Plastic Dual Cartridge 210 g Reenterable - - - Blue - - - >20kV/mm - -
RS Stock No. 121-3881
Mfr. Part No.ISAAC4MP
BrandRaytech
HK$935.64
1 Set
Set(s)
- Pack 30 x 24 x 23 mm - - - - Transparent +90°C - - - - Maximum of +90 °C
RS Stock No. 703-1228
Mfr. Part No.Magic-rubber
BrandRaytech
HK$577.14
Each
units
Rubber Kit 500 g Dielectric, Elastic Properties, Mechanical Properties, Thermal Conductivity 10 min - - - - - - >20kV/mm Odourless -
RS Stock No. 832-4723
Mfr. Part No.WONDER-F280
BrandRaytech
HK$231.27
Each
units
Silicone Cartridge 280 ml Even Suitable For Standard Boxes, Ideal For Filling Wonder Joint Enclosures, It Does Not Solidify, No Waste - No Shelf Life, Once Open - - 0.2W/mK Green +200°C -60°C - >23kV/mm - -60 → +200 °C
RS Stock No. 876-2444
Mfr. Part No.UR5635RP250G
HK$219.71
Each
units
PUR Pack 250 g Acid Resistance, Alkalis Resistance, Suitable For a Range of Environments, Water and Mould Growth, Weather Resistance 4 (60°C) h, 24 (23°C) h 80 Shore A 0.2W/mK Off-White +120°C -40°C - 11kV/mm - -40 → +120 °C
RS Stock No. 552-668
BrandRS PRO
HK$85.87
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, Bis[4-(2, Epoxy Resin, Zinc Oxide, 3-Epoxypropoxy)Phenyl]Propane 10kV/mm - -40 → +130 °C
RS Stock No. 918-4996
Mfr. Part No.834ATH-375ML
HK$379.67
Each
units
Epoxy Bottle 375 ml Flame Retardant 45 min 85 Shore D 0.37W/mK Black +200°C -40°C Alkyl Glycidyl Ether, Aluminum Trihydrate, Antimony Trioxide, Bisphenol-A Epoxy Resin, Carbon Black, Heavy Alkylate, Hydrated, Naphtha, Petroleum, Phenyl Glycidyl Ether/formaldehyde Copolymer, Zinc Borate, 1,1'-(1,2-Ethanediyl) Bis[2,3,4,5,6-Pentabromo-Benzene - - -40 → +200 °C
RS Stock No. 121-3882
Mfr. Part No.PASCAL6MP
BrandRaytech
HK$565.33
1 Set
Set(s)
- Pack 38 x 30 x 26 mm - - - - Transparent +90°C - - - - Maximum of +90 °C
RS Stock No. 183-1665
Mfr. Part No.Nanofor-4
BrandRaytech
HK$79.42
Each
units
- Blister - - - - - - +90°C - - - - -
RS Stock No. 832-4720
Mfr. Part No.WONDERJL4
BrandRaytech
HK$326.69
Each
units
Silicone Cartridge - Can Energize Immediately, Completely Non-Toxic & No Shelf Life, Enclosure With Special Check Valve, Even Suitable For High Depths, Mess Free, Re-Accessible And Inspectable - - 0.2W/mK Green +90°C - - >23kV/mm - Maximum of +90 °C
RS Stock No. 183-1674
Mfr. Part No.BOB4
BrandRaytech
HK$270.01
Each
units
- Blister - - - - - - +90°C - - - - -
RS Stock No. 183-1671
Mfr. Part No.Fred
BrandRaytech
HK$105.13
Each
units
- Blister - - - - - - +90°C - - - - -
RS Stock No. 183-1666
Mfr. Part No.Bravo1-6
BrandRaytech
HK$83.89
Each
units
- Blister - - - - - - +90°C - - - - -
RS Stock No. 183-1672
Mfr. Part No.Fred-Y
BrandRaytech
HK$230.66
Each
units
- Blister - - - - - Grey +90°C - - - - -
RS Stock No. 183-1676
Mfr. Part No.ReadyBox
BrandRaytech
HK$422.09
Each
units
- - - - - - - Grey +90°C - - - - -
RS Stock No. 768-2303
Mfr. Part No.UR5604RP250G
HK$170.01
Each
units
PUR Pack 250 g Flame Retardant 24 h - 0.45W/mK Black +130°C -40°C - - - -40 → +130 °C
RS Stock No. 146-2865
Mfr. Part No.832HD-25ML
HK$108.09
Each
units
Epoxy Dual Cartridge 25 mL Chemical Resistance, Harsh Resistance, Salt Water Resistance 24 h @ +25°C 80 Shore D 0.27W/mK - +150°C -40°C - 15.8 kV/mm, 400 V/mil Ammoniacal, Sulphurous -40 → +150 °C