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. 183-1676
Mfr. Part No.ReadyBox
BrandRaytech
MYR249.80
Each
units
- - - - - - - - Grey +90°C - - - -
RS Stock No. 183-1671
Mfr. Part No.Fred
BrandRaytech
MYR68.73
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 192-7564
Mfr. Part No.8800-375ML
MYR255.56
Each
units
- PUR Bottle 375 ml - 24 h @ 22 °C, 25 min @ 80 °C, 30 min @ 65 °C 74 Shore A 0.32W/mK Black +125°C -50°C - 14.6kV/mm -
RS Stock No. 915-9732
Mfr. Part No.Scotchcast 8882 Easy dispenser 250
Brand3M
MYR168.85
Each
units
Scotchcast 8882 - - - - - - - - - - - - -
RS Stock No. 183-1651
Mfr. Part No.Happy1
BrandRaytech
MYR28.51
Each (In a Pack of 2)
units
- - Blister - - - - - Grey +90°C - - - -
RS Stock No. 194-4684
Mfr. Part No.520005402
MYR1,051.90
1 Kit
Kit(s)
QSil 553 Silicone Kit - Thermal Conductivity 7 min @ 100°C, 24 h @ 25 °C - 0.68W/mK - +260°C -55°C - - -
RS Stock No. 121-3881
Mfr. Part No.ISAAC4MP
BrandRaytech
MYR832.32
1 Set
Set(s)
- - Pack 30 x 24 x 23 mm - - - - Transparent +90°C - - - -
RS Stock No. 183-1672
Mfr. Part No.Fred-Y
BrandRaytech
MYR157.80
Each
units
- - Blister - - - - - Grey +90°C - - - -
RS Stock No. 164-292
Mfr. Part No.UR5044RP250G
MYR112.10
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. 192-7565
Mfr. Part No.8810-375ML
MYR209.97
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. 915-9735
Mfr. Part No.Re-enterable Scotchcast Resin 8882 292ml
Brand3M
MYR139.08
Each
units
- - - - - - - - - - - - - -
RS Stock No. 183-1665
Mfr. Part No.Nanofor-4
BrandRaytech
MYR51.90
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 915-9726
Mfr. Part No.Re-enterable Scotchcast Resin 8882 659ml
Brand3M
MYR256.02
Each
units
Scotchcast 8882 - - - - - - - - - - - - -
RS Stock No. 183-1659
Mfr. Part No.Ohm
BrandRaytech
MYR51.55
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. 183-1663
Mfr. Part No.Nano6
BrandRaytech
MYR44.04
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 146-6593
BrandRS PRO
MYR120.35
Each
units
- PUR Pack 250 g Chemical Resistance, Mark Resistance, Scratch Resistance, UV Light Resistance, Weather Resistance, Yellowing Resistance 4 h @ 60 °C, 24 h @ 23 °C 75 Shore A 0.2W/mK Transparent +120°C -40°C Polyurethane Resin 11kV/mm -
RS Stock No. 183-1656
Mfr. Part No.HappyJoint5
BrandRaytech
MYR39.905
Each (In a Pack of 2)
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 183-1667
Mfr. Part No.Bravo3-6
BrandRaytech
MYR63.82
Each
units
- - Blister - - - - - - +90°C - - - -
RS Stock No. 918-4992
Mfr. Part No.832TC-450ML
MYR322.25
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 - -