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Epoxy Potting Compounds


Encase electronic assemblies in a layer of epoxy for protection from dust, chemicals, moisture, mechanical shock, and vibration. The strongest of the potting compounds, epoxies are rigid and wear resistant. They have excellent chemical and moisture resistance, withstand a wide range of temperatures, and provide excellent electrical insulation. All require a mixer nozzle and gun to dispense.
Loctite® ES1001™, ES1902™, and ES2500™ come with a mixer nozzle.
Dry Time | ||||||||||||
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Mfr. Model No. | Container Size, fl. oz. | Consistency | Touch | Overall | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Specifications Met | For Use On | Color | Each | |
DP270 | 1.64 | Thick Liquid | 3 hrs. | 48 hrs. | 850 | 0.18 | -65° to 210° | UL 94 HB | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Rubber, Glass | Clear | 00000000 | 000000 |
DP270 | 6.8 | Thick Liquid | 3 hrs. | 48 hrs. | 850 | 0.18 | -65° to 210° | UL 94 HB | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Rubber, Glass | Clear | 00000000 | 00000 |
Mixer Nozzle for 1.64 fl. oz. Cartridges | 0000000 | Each | 00000 |
Dispensing Gun for 1.64 fl. oz. and 1.69 fl. oz. Cartridges | 0000000 | Each | 000000 |
Mixer Nozzle for 1.64 fl. oz. and 1.69 fl. oz. Cartridges (Mixing Elements: 16) | 0000000 | Each | 0000 |
Dispensing Gun for 6.8 fl. oz. Cartridges | 0000000 | Each | 000000 |
Mixer Nozzle for 6.8 fl. oz. Cartridges | 0000000 | Each | 0000 |
Dry Time | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Container Size, fl. oz. | Consistency | Touch, min. | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | For Use On | Color | Each | |
ES1902 | 1.7 | Thin Liquid | 60 | 24 | 1,350 | Not Rated | -40° to 250° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic | Clear | 0000000 | 000000 |
Dispensing Gun for 1.7 fl. oz. Cartridges | 00000000 | Each | 000000 |
Optically Clear Epoxy Potting Compounds


Clear enough to read through, these UV-resistant potting compounds allow optimal light transmission for use with LEDs, solar cells, and fiber optics. Use them to encase electronic assemblies for protection from dust, chemicals, moisture, mechanical shock, and vibration. Rigid and wear resistant, epoxies are the strongest of the potting compounds. They have excellent chemical and moisture resistance, withstand a wide range of temperatures, and provide excellent electrical insulation. All require a mixer nozzle and gun to dispense.
Loctite® ES1901™ comes with a mixer nozzle.
Dry Time | |||||||||||
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Mfr. Model No. | Container Size, fl. oz. | Consistency | Touch, min. | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | For Use On | Color | Each | |
Loctite® Compounds—Extra Hard | |||||||||||
ES1901 | 1.7 | Thick Liquid | 3 | 24 | 400 | Not Rated | -40° to 220° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | Clear | 0000000 | 000000 |
Optically Clear Epoxy Potting Compounds—Extra Hard | |||||||||||
__ | 1.7 | Thick Liquid | 40 | 24 | 229 | 0.45 | -65° to 275° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Iron, Silver, Plastic, Rubber, Composites, Fiberglass, Ceramic, Glass | Amber | 0000000 | 00000 |
Two-Part Adhesive Dispensing Guns | |||
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Dispensing Gun for 1.7 fl. oz. Cartridges | 00000000 | Each | 000000 |
Light-Activated Epoxy Potting Compounds
Handle potted items within minutes—these potting compounds dry quickly when exposed to UV light. For added strength and durability, cure them with heat. Since they’re epoxy, they won’t break down from chemicals or moisture. They’re also excellent electrical insulators and withstand a wide range of temperatures. Use them to shield components from dust, moisture, chemicals, mechanical shock, and vibration. You need a mixer nozzle (not included) and a gun and plunger (both sold separately) to dispense. The nozzle lets you apply these compounds precisely.
For maximum effectiveness, these compounds need to be heat cured after they’re cured with UV light. Overall dry time includes heat curing at 149° F.

Dry Time | |||||||||||
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Mfr. Model No. | Container Size, fl. oz. | Consistency | Touch, min. | Overall, hrs. | Light Intensity Requirements to Reach Full Strength | Cure Type | Temp. Range, °F | For Use On | Color | Each | |
Loctite® Compounds—Extra Hard | |||||||||||
3336 | 1.4 | Thick Liquid | 5 | 16 | 60 seconds @ 30 mW/cm2 | UV Light | -65° to 350° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Fiberglass, Composites, Plastic, Silver | Amber | 0000000 | 000000 |

For Cartridge Size | Each | |
1.4 fl. oz. | 0000000 | 000000 |

For Cartridge Size | Each | |
1.4 fl oz. | 00000000 | 00000 |
Ready-to-Use Silicone Potting Compounds

No mixing required—these potting compounds come ready to apply. Use them to encase electronic assemblies for protection from dust, moisture, mechanical shock, and vibration. Softer and more flexible than epoxies and urethanes with the widest temperature range, silicone potting compounds are the best choice for high-temperature applications and electronics exposed to thermal cycling. They have good moisture resistance but poor chemical and abrasion resistance. Silicones provide excellent electrical insulation. They're also known as RTV (room-temperature vulcanizing) compounds because they don’t need heat or UV light to cure.
Potting compounds that cannot be sold to Canada are restricted by product labeling requirements.
Container | Dry Time | |||||||||||||
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Size, fl. oz. | Type | Consistency | Touch | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Specifications Met | For Use On | Color | Clarity | Cannot Be Sold To | Each | |
Compounds—Soft | ||||||||||||||
3 | Tube | Paste | 15 min. | 24 | 425 | 0.06 | -75° to 400° | UL 94 HB | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | Clear | Clear | Canada | 00000000 | 000000 |
Two-Part Silicone Potting Compounds
Encase electronic assemblies in a layer of silicone for protection from dust, moisture, mechanical shock, and vibration. Softer and more flexible than epoxies and urethanes with the widest temperature range, silicone potting compounds are the best choice for high-temperature applications and electronics exposed to thermal cycling. They have good moisture resistance but poor chemical and abrasion resistance. Silicones provide excellent electrical insulation. They’re also known as RTV (room-temperature vulcanizing).
Cartridge potting compound requires a gun (sold separately) to dispense; use it with the included mixer nozzle.

Dry Time | |||||||||
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Container Size, fl. oz. | Consistency | Touch, min. | Overall, hrs. | Thermal Conductivity, W/m-K | Temp. Range, °F | For Use On | Color | Each | |
1.7 | Thick Liquid | 25 | 48 | 0.18 | -55° to 390° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | Clear | 00000000 | 000000 |
Dispensing Gun for 1.7 fl. oz. Cartridges | 00000000 | Each | 000000 |
Optically Clear Two-Part Silicone Potting Compounds


Clear enough to read through, these UV-resistant potting compounds allow optimal light transmission for use with LEDs, solar cells, and fiber optics. Use them to encase electronic assemblies for protection from dust, moisture, mechanical shock, and vibration. Softer and more flexible than epoxies and urethanes with the widest temperature range, these silicone compounds are the best choice for high-temperature applications and electronics exposed to thermal cycling. They have excellent electrical insulation and good moisture resistance but poor chemical and abrasion resistance. Also known as RTV (room-temperature vulcanizing).
Compounds in a cartridge come with a mixer nozzle for precise application. You need a gun (sold separately) to dispense.
Compounds in a bottle are easy to apply in high volumes. Just mix and pour them over components inside containers, such as potting boxes.
Liquid compounds harden around your component to form a strong, durable, and permanent layer of protection.
Gel compounds form a soft and flexible layer of protection. You can also remove them if you need to re-access your components. They are rated IP68 once potted, so they seal out water even if submersed.
Container | Dry Time | |||||||||||||
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Mfr. Model No. | Size | Type | Consistency | Touch, min. | Overall, min. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Environmental Rating | Certificate | For Use On | Color | Each | |
Loctite® Compounds—Soft | ||||||||||||||
5620 | 13.5 fl. oz. | Cartridge | Thin Liquid | 20 | 30 | 530 | 0.16 | -65° to 390° | __ | Material Certificate with Traceable Lot Number and Product Shelf Life | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Titanium, Plastic, Composites, Fiberglass | Clear | 00000000 | 0000000 |
Momentive Compounds—Medium Soft | ||||||||||||||
RTV615 | 1 lbs. | Bottle | Thick Liquid | 60 | 60 | 500 | 0.19 | -75° to 400° | __ | __ | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Titanium, Plastic, Composites, Fiberglass | Clear | 00000000 | 000000 |
Compounds | ||||||||||||||
__ | 10.1 fl. oz. | Bottle | Gel | 15 | 15 | 500 | 0.2 | -75° to 355° | IP68 | __ | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Titanium, Plastic, Composites, Fiberglass | Clear | 00000000 | 00000 |
Low-Outgassing Optically Clear Two-Part Silicone Potting Compounds

Tested to meet ASTM E595, a standard used by NASA, these compounds produce almost no volatile emissions that could damage sensitive electronics, even in a vacuum. Light passes through them easily, so they’re ideal for protecting solar cells and fiber optics. Made of silicone, these compounds are softer and more flexible than epoxy and urethane compounds. That means they’re better at protecting against shocks and vibration. They also withstand a wider range of temperatures, so you can use them with electronics that heat and cool rapidly. These compounds are excellent electrical insulators, and they’ll shield your components from moisture and dust. However, they don’t hold up well to chemicals or scrapes. They’re also known as RTV (room-temperature vulcanizing).
These compounds are easy to apply in high volumes. Just mix the two parts together and pour them over components inside a container, such as a potting box.
Dry Time | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Container Size, oz. | Consistency | Touch, hrs. | Overall, hrs. | Hardness Rating | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Specifications Met | For Use On | Color | Each | |
4.1 | Thick Liquid | 3 | 24 | Medium Soft | 475 | 0.2 | -45° to 390° | ASTM E595 | Aluminum, Brass, Bronze, Copper, Steel, Iron, Silver, Fiberglass, Glass | Clear | 0000000 | 000000000 |
Reusable Silicone Potting Compounds


Make repairs or changes to electrical components after they’ve been potted. While most compounds are permanent, these form a gel that bonds to itself, so you can peel it off without damaging your equipment. Often used in junction boxes, they form a water- and dust-proof seal that’s rated IP68 while also providing excellent electrical insulation. Made of silicone, they withstand a wide range of temperatures and are soft and flexible enough to resist shock and vibration. However, they’re not as strong as permanent potting compounds, so they don’t resist scrapes as well as those made of epoxy and urethane. They’re also not as chemical resistant as epoxy and urethane compounds.
These compounds won’t solidify once you open the container, so you have time to make adjustments when applying them. When removing them from your components, they mostly come off in one piece but there might be some residue left over.
Cartridge compounds have a nozzle for precise application. The nozzle can also fit into junction box knockouts, so it’s easier to fill up installed enclosures than it is with bottle compounds. They come ready to use with no mixing required and no waiting time.
Container Size, fl. oz. | Consistency | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Environmental Rating | For Use On | Color | Clarity | Each | |
Cartridge Compounds | ||||||||||
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9.4 | Gel | 500 | 0.2 | -75° to 390° | IP68 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Fiberglass, Ceramic, Glass, Composites, Plastic, Rubber | Clear | Clear | 0000000 | 000000 |
Light-Activated Urethane Potting Compounds

In just 20 seconds under a UV light, these urethane compounds form into a strong protective layer on electrical components. They withstand a wide range of temperatures and are good electrical insulators. They also stop chemicals, moisture, and dust from damaging your device. With excellent flexibility, they protect against vibration and impact. Since they also work as an adhesive, you can use them to bond and insulate components such as electrical connectors and thermal switches. No mixing required.
Dry Time | |||||||||||||
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Container Size, fl. oz. | Consistency | Touch, sec. | Overall, sec. | Light Intensity Requirements to Reach Full Strength | Cure Type | Hardness Rating | Dielectric Strength, V/mil | Thermal Conductivity | Temp. Range, °F | For Use On | Color | Each | |
1.69 | Thin Liquid | 20 | 20 | 20 sec. @ 100 mW/cm2 | UV Light | Extra Hard | 1,800 | Not Rated | -40° to 250° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Polycarbonate Plastic, ABS Plastic, PVC Plastic, Polyimide Plastic, Garolite, Ceramic, Glass, Plastic | Clear | 0000000 | 000000 |
Heat-Transfer Potting Compounds
Formulated to draw heat away from sensitive electronic components, these potting compounds have higher thermal conductivity than standard potting compounds. Use them to encase electronic assemblies for protection from dust, chemicals, moisture, mechanical shock, and vibration. Rigid and wear resistant, epoxies are the strongest of the potting compounds. They have excellent chemical and moisture resistance, withstand a wide range of temperatures, and provide excellent electrical insulation.

Dry Time | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Container Size, fl. oz. | Consistency | Touch | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Max. Temp., °F | Heating Requirements to Reach Full Strength | For Use On | Color | Each | |
1.5 | Thin Liquid | 30 min. | 26 | 450 | 0.59 | 500° | 1 hr. @ 250° F then 1 hr. @ 350° F | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Iron, Silver, Titanium, Plastic, Composites, Ceramic, Glass | Amber | 0000000 | 000000 |

Dry Time | |||||||||||||
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Container Size, fl. oz. | Consistency | Touch | Overall, hrs. | Mix Ratio | Tensile Strength, psi | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Max. Temp., °F | Heating Requirements to Reach Full Strength | For Use On | Color | Each | |
16 | Thin Liquid | 30 min. | 26 | 6:1 | 9,500 | 450 | 0.59 | 500° | 1 hr. @ 250° F then 1 hr. @ 350° F | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Iron, Silver, Titanium, Plastic, Composites, Ceramic, Glass | Amber | 0000000 | 0000000 |
Adjustable-Flexibility Heat-Transfer Potting Compounds

Mixing required—resin and hardener come in two separate jars or in a jar and syringe and must be combined before applying. Change the mix ratio of these heat-transfer potting compounds to achieve the right hardness for your application. They're formulated to draw heat away from sensitive electronic components, so they have higher thermal conductivity than standard potting compounds. Use them to encase electronic assemblies for protection from dust, chemicals, moisture, mechanical shock, and vibration. Rigid and wear resistant, epoxies are the strongest of the potting compounds. They have excellent chemical and moisture resistance, withstand a wide range of temperatures, and provide excellent electrical insulation.
The size listed is the combined total of the two parts.
Dry Time | ||||||||||||
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Container Size, fl. oz. | Consistency | Touch, min. | Overall, hrs. | Hardness Rating | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Heating Requirements to Reach Full Strength | For Use On | Color | Each | |
Jar and Syringe Compounds | ||||||||||||
1.6 | Thick Liquid | 30 | 26 | Extra Hard, Medium Hard, Medium Soft, Soft | 450 | 1.01 | -100° to 450° | 2 hrs. @ 250° F | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | Tan | 000000 | 000000 |
Heavy Duty Coatings for Electronics

Thinner than potting compounds, these coatings flow easily into small spaces between electrical components. Use them to secure and insulate hardware on printed circuit boards. Rigid and wear resistant, epoxies have excellent chemical and moisture resistance, withstand a wide range of temperatures, and provide excellent electrical insulation. Dispense with a mixer nozzle and a gun (each sold separately).
Certificates with a traceable lot number and product shelf life are available for these products. Download certificates from ORDER HISTORY after your order ships.
Dry Time | ||||||||||
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Mfr. Model No. | Container Size, fl. oz. | Consistency | Touch, min. | Overall, hrs. | Dielectric Strength, V/mil | Temp. Range, °F | For Use On | Color | Each | |
Loctite® Coatings—Extra Hard | ||||||||||
E-00CL | 1.7 | Thick Liquid | 5 | 24 | 400 | -65° to 180° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Silver, Plastic, Composites, Fiberglass | Clear | 0000000 | 000000 |
E-00CL | 6.8 | Thick Liquid | 5 | 24 | 400 | -65° to 180° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Silver, Plastic, Composites, Fiberglass | Clear | 0000000 | 00000 |
Insulating Adhesives for Electronics

Tack wires to coil forms or secure and insulate hardware on printed circuit boards with these instant-bond adhesives. They require an accelerator to create adhesion.
Certificates with a traceable lot number and product shelf life are available for these products. Download certificates from ORDER HISTORY after your order ships.
Container | |||||||||||
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Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Thermal Conductivity, W/m-K | Consistency | Temp. Range, °F | Color | For Joining | Each | |
Loctite® Adhesives | |||||||||||
382 | 0.7 | Bottle | 30 sec. | 24 hrs. | 0.1 | Thick Liquid | -65° to 210° | Clear | Metal, Plastic, Rubber | 00000000 | 000000 |
444 | 0.7 | Bottle | 30 sec. | 24 hrs. | 0.1 | Thin Liquid | -65° to 180° | Clear | Metal, Plastic, Rubber | 0000000 | 00000 |
Loctite® Adhesives with Accelerator | |||||||||||
382 | 0.7 | Bottle | 30 sec. | 24 hrs. | 0.1 | Thick Liquid | -65° to 210° | Clear | Metal, Plastic, Rubber | 00000000 | 00000 |
444 | 0.7 | Bottle | 30 sec. | 24 hrs. | 0.1 | Thin Liquid | -65° to 180° | Clear | Metal, Plastic, Rubber | 0000000 | 00000 |