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. 183-1655
Mfr. Part No.HappyJoint4
BrandRaytech
TWD256.00
Each (In a Pack of 2)
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 283-460
Mfr. Part No.QSIL-553
TWD2,166.00
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. 166-844
Mfr. Part No.UR5097RP250G
TWD953.00
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. 192-7570
Mfr. Part No.9510-300ML
TWD2,547.00
Each
units
- Epoxy Cartridge 300 ml - 1 h @ 90 °C, 3 h @ 80 °C, 30 min @ 120 °C 84 Shore D 0.3W/mK Black +150°C -65°C - 15.8kV/mm -
RS Stock No. 183-1668
Mfr. Part No.Barney
BrandRaytech
TWD377.00
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 183-1656
Mfr. Part No.HappyJoint5
BrandRaytech
TWD256.00
Each (In a Pack of 2)
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 703-1231
Mfr. Part No.M agic-Gel
BrandRaytech
TWD2,390.00
Each
units
- Gel Kit 1000 g Dielectric, Low Viscosity, Sealing Characteristics, Thermal Conductivity - - - - - - - >20kV/mm -
RS Stock No. 121-3877
Mfr. Part No.ISAAC4
BrandRaytech
TWD562.00
1 Set
Set(s)
- - Blister 30 x 24 x 23 mm - - - - Transparent +90°C - - - -
RS Stock No. 183-1678
Mfr. Part No.100090-MAG
BrandRaytech
TWD690.00
Each
units
- - - 90 g - - - - Blue +90°C - - - -
RS Stock No. 192-7565
Mfr. Part No.8810-375ML
TWD1,328.00
Each
units
- PUR Bottle 375 ml - 1 h @ 65 °C, 24 h @ 22 °C, 45 min @ 80 °C 80 Shore D 0.25W/mK Black +125°C -50°C - 16kV/mm -
RS Stock No. 192-7569
Mfr. Part No.9510-30ML
TWD995.00
Each
units
- Epoxy Cartridge 30 ml - 1 h @ 90 °C, 3 h @ 80 °C, 30 min @ 120 °C 84 Shore D 0.3W/mK Black +150°C -65°C - 15.8kV/mm -
RS Stock No. 183-1677
Mfr. Part No.FOXBOX
BrandRaytech
TWD2,066.00
Each
units
- - - - - - - - Grey +90°C - - - -
RS Stock No. 121-3882
Mfr. Part No.PASCAL6MP
BrandRaytech
TWD3,087.00
1 Set
Set(s)
- - Pack 38 x 30 x 26 mm - - - - Transparent +90°C - - - -
RS Stock No. 183-1650
Mfr. Part No.Happy0
BrandRaytech
TWD147.30
Each (In a Pack of 4)
units
- - Blister - - - - - Orange +90°C - - - -
RS Stock No. 183-1665
Mfr. Part No.Nanofor-4
BrandRaytech
TWD328.00
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 832-4723
Mfr. Part No.WONDER-F280
BrandRaytech
TWD973.00
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. 183-1679
Mfr. Part No.100004-002
BrandRaytech
TWD791.00
Each
units
- - - - - - - - - +90°C - - - -
RS Stock No. 164-292
Mfr. Part No.UR5044RP250G
TWD899.00
Each
units
UR5044 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. 183-1659
Mfr. Part No.Ohm
BrandRaytech
TWD330.00
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 183-1661
Mfr. Part No.Nano3
BrandRaytech
TWD160.80
Each (In a Pack of 4)
units
- - Blister - - - - - - +90°C - - - -