Potting Compounds

Potting compounds are a general-purpose types 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 perform as a better adhesive, 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 predictable. 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 an excellent 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.

Applications of Potting Compounds

Potting compounds are used in a range of applications such as;

  • Military
  • Industrial
  • Automotive industry
  • PCB's
  • Coils

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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. 283-460
Mfr. Part No.QSIL-553
MYR354.79
Each
units
QSil 553 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
MYR159.35
Each
units
AS1621 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
MYR170.00
Each
units
- Plastic Dual Cartridge 210 g Reenterable - - - Blue - - - >20kV/mm -
RS Stock No. 832-4723
Mfr. Part No.WONDER-F280
BrandRaytech
MYR156.45
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 -
RS Stock No. 703-1231
Mfr. Part No.M agic-Gel
BrandRaytech
MYR534.08
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
MYR361.55
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
MYR442.56
1 Set
Set(s)
- - Pack 30 x 38 x26 mm - - - - Transparent +90°C - - - -
RS Stock No. 121-3884
Mfr. Part No.KELVINMP
BrandRaytech
MYR735.67
1 Set
Set(s)
- - Pack 45 x 45 x 30 mm - - - - Transparent +90°C - - - -
RS Stock No. 121-3880
Mfr. Part No.KELVIN
BrandRaytech
MYR51.95
1 Set
Set(s)
- - Blister 52 x 53 x 29 mm - - - - Transparent +90°C - - - -
RS Stock No. 183-1659
Mfr. Part No.Ohm
BrandRaytech
MYR53.40
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 183-1655
Mfr. Part No.HappyJoint4
BrandRaytech
MYR37.955
Each (In a Pack of 2)
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 183-1661
Mfr. Part No.Nano3
BrandRaytech
MYR21.463
Each (In a Pack of 4)
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 121-3882
Mfr. Part No.PASCAL6MP
BrandRaytech
MYR505.71
1 Set
Set(s)
- - Pack 38 x 30 x 26 mm - - - - Transparent +90°C - - - -
RS Stock No. 183-1662
Mfr. Part No.Nano5
BrandRaytech
MYR36.145
Each (In a Pack of 2)
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 166-844
Mfr. Part No.UR5097RP250G
MYR152.51
Each
units
UR5097 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. 183-1671
Mfr. Part No.Fred
BrandRaytech
MYR71.20
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 183-1650
Mfr. Part No.Happy0
BrandRaytech
MYR23.758
Each (In a Pack of 4)
units
- - Blister - - - - - Orange +90°C - - - -
RS Stock No. 183-1676
Mfr. Part No.ReadyBox
BrandRaytech
MYR249.80
Each
units
- - - - - - - - Grey +90°C - - - -
RS Stock No. 183-1670
Mfr. Part No.Barney-Y
BrandRaytech
MYR111.36
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 183-1674
Mfr. Part No.BOB4
BrandRaytech
MYR191.46
Each
units
- - Blister - - - - - - +90°C - - - -