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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.
3M DP460EG and DP4XLEG also require a plunger to dispense.
Loctite® ES1001™, ES1902™, and ES2500™ come with a mixer nozzle.
Compounds that cannot be sold to Canada are restricted by product labeling requirements.
Dry Time | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | Choose a 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 | 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 | 00000000 | 00000 | |
DP270 | 13.5 | 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 | Black | 00000000 | 000000 |
DP460EG | 1.69 | Thick Liquid | 110 min. | 7 days | 510 | Not Rated | 0° to 175° | __ | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic | Off-White | 00000000 | 00000 |
DP4XLEG | 1.69 | Thick Liquid | 5 hrs. | 7 days | 670 | Not Rated | -40° to 120° | __ | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic | Off-White | 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 |
Plunger for 1.69 fl. oz. DP460EG Cartridges | 0000000 | Each | 00000 |
Mixer Nozzle for 1.64 fl. oz. and 1.69 fl. oz. Cartridges (Mixing Elements: 20) | 00000000 | Each | 0000 |
Dispensing Gun for 6.8 fl. oz. Cartridges | 0000000 | Each | 000000 |
Mixer Nozzle for 6.8 fl. oz. Cartridges | 0000000 | Each | 0000 |
Dispensing Gun for 13.5 fl. oz. Cartridges | 00000000 | Each | 000000 |
Mixer Nozzle for 13.5 fl. oz. Cartridges | 00000000 | 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 | |
E-60NC | 1.7 | Thick Liquid | 60 | 24 | 550 | Not Rated | -65° to 250° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Titanium, Plastic, Composites, Fiberglass | Black | 0000000 | 000000 |
E-60NC | 6.8 | Thick Liquid | 60 | 24 | 550 | Not Rated | -65° to 250° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Titanium, Plastic, Composites, Fiberglass | Black | 0000000 | 00000 |
E-60NC | 13.5 | Thick Liquid | 60 | 24 | 550 | Not Rated | -65° to 250° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Titanium, Plastic, Composites, Fiberglass | Black | 0000000 | 00000 |
ES1001 | 1.7 | Thick Liquid | 60 | 24 | 1,100 | 0.29 | -10° to 220° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | Black | 0000000 | 00000 |
Dispensing Gun for 1.7 fl. oz. Cartridges | 00000000 | Each | 000000 |
Mixer Nozzle for 1.7 fl. oz. E-60NC Cartridges | 00000000 | Each | 0000 |
Mixer Nozzle for 6.8 fl. oz. and 13.5 fl. oz. Cartridges | 0000000 | Each | 0000 |
Dispensing Gun for 6.8 fl. oz. Cartridges | 0000000 | Each | 000000 |
Dispensing Gun for 13.5 fl. oz. Cartridges | 0000000 | Each | 000000 |
Dry Time | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
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 | Cannot Be Sold To | Each | |
1.69 | Thick Liquid | 45 | 24 | 400 | 0.3 | -40° to 300° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Plastic, Rubber, Composites, Fiberglass, Ceramic, Glass | Black | Canada | 0000000 | 000000 |
Heat-Transfer Epoxy 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.
Cartridge potting compound requires a gun and mixer nozzle (each sold separately) to dispense.

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 | |
0.9 | Thick Liquid | 25 min. | 24 | 450 | 1.87 | 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 | Black | 0000000 | 000000 |

Dry Time | ||||||||||
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Container Size, gal. | Consistency | Touch, min. | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Max. Temp., °F | For Use On | Color | Each | |
1 | Thick Liquid | 25 | 24 | 450 | 1.87 | 500° | Steel, Ceramic, Glass | Black | 0000000 | 0000000 |

Dry Time | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
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 | |
1.7 | Thick Liquid | 15 | 8 | 520 | 1.01 | -40° to 210° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Titanium, Plastic, Composites, Fiberglass | Black | 0000000 | 000000 |

Dry Time | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Container Size, fl. oz. | Consistency | Touch | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Max. Temp., °F | For Use On | Color | Each | |
19 | Thick Liquid | 25 min. | 24 | 450 | 1.87 | 500° | Steel, Ceramic, Glass | Black | 0000000 | 0000000 |
Adjustable-Flexibility Heat-Transfer Epoxy 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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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 Compounds | ||||||||||||
12 | Thick Liquid | 30 | 24 | Extra Hard, Medium Hard, Medium Soft, Soft | 450 | 1 | -100° to 450° | __ | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | Tan | 000000 | 0000000 |
24 | Thick Liquid | 30 | 24 | Extra Hard, Medium Hard, Medium Soft, Soft | 450 | 1 | -100° to 450° | __ | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | Tan | 000000 | 000000 |
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 | 00000 |
Low-Outgassing Heat-Transfer Epoxy Potting Compounds

Tested to meet ASTM E595, a standard used by NASA, these potting compounds release almost no volatile emissions that could damage sensitive electronics, even in a vacuum. Use them to draw heat away from your components—they conduct heat better than standard potting compounds. Made of epoxy, they’re the strongest of the potting compounds, so they’re rigid and wear resistant. They’ll also resist breaking down from chemicals and moisture. These compounds are excellent at insulating current, and they’ll shield against dust, vibration, and shock.
To apply, mix the two parts together and pour them over components inside a container, such as a potting box.
Dry Time | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Container Size, fl. oz. | Consistency | Touch | Overall | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Heating Requirements to Reach Full Strength | Specifications Met | For Use On | Color | Each | |
Pail and Can Compounds—Extra Hard | ||||||||||||
32 | Thick Liquid | 45 min. | 24 hrs. | 365 | 1.25 | -40° to 265° | __ | ASTM E595 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic | Black | 0000000 | 0000000 |
32 | Thick Liquid | 4 hrs. | 12 hrs. | 450 | 0.55 | -65° to 310° | 12 hrs. @ 175° F | ASTM E595 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic | Black | 0000000 | 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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
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 | 500 | 0.24 | -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 | |||
---|---|---|---|
Dispensing Gun for 1.7 fl. oz. Cartridges | 00000000 | Each | 000000 |
Mixer Nozzles for Two-Part Adhesive Cartridges | |||
---|---|---|---|
Mixer Nozzle for 1.7 fl. oz. Cartridges | 00000000 | Each | 00000 |
High-Temperature Epoxy Potting Compounds

Protect circuit boards and other electronics where high heat is a concern but you don’t need to transfer that heat elsewhere. These compounds are a good middle ground between standard epoxy compounds and heat-transfer compounds. They work at temperatures twice as high as standard epoxy compounds. However, they don't conduct heat as well as heat-transfer compounds so they're not the best choice for circuit boards that run for long periods of time. Harden these compounds at room temperature—they don’t require an oven to harden like heat-transfer compounds do.
Since they’re an epoxy compound, 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.
Jar and syringe compounds are the consistency of honey once they’re mixed, so they’ll seep into the crevices of a circuit board and encapsulate intricate components. Use the syringe for precise application.
Dry Time | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Container Size, fl. oz. | Consistency | Viscosity, cP | Touch | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Max. Temp., °F | For Use On | Each | |
Jar and Syringe Compounds—Extra Hard | ||||||||||
1 | Thick Liquid | 3,600 | 12 hrs. | 24 | 450 | 0.22 | 500° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Rubber, Composites, Fiberglass, Ceramic, Glass | 0000000 | 000000 |
Flexible Epoxy Potting Compounds
Combine the flexibility of silicone with the durability of standard epoxy—these compounds are great for protecting sensitive electronics that need to flex or expand and contract. Because they’re an epoxy, they still have excellent moisture, chemical, and abrasion resistance. They withstand a wide range of temperatures, and this formulation won’t crack or split as components heat up and cool down. These compounds are excellent electrical insulators, and they’ll shield your components from moisture and dust. You can also use them as an adhesive since they’re also tacky.
They come in a cartridge, so you can apply them precisely. To dispense, they require a mixer nozzle and gun (both sold separately).

Dry Time | ||||||||
---|---|---|---|---|---|---|---|---|
Container Size, fl. oz. | Consistency | Touch, hrs. | Overall, hrs. | Hardness Rating | Temp. Range, °F | For Use On | Each | |
1.69 | Thick Liquid | 24 | 72 | Soft | -85° to 275° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Plastic, Rubber, Composites, Fiberglass, Ceramic, Glass | 0000000 | 000000 |

For Cartridge Size | Each | |
1.69 fl. oz. | 00000000 | 000000 |

For Cartridge Size | Each | |
1.69 fl. oz. | 00000000 | 00000 |
Epoxy Potting Compounds for Harsh Environments
Tough enough to be permanently submersed in seawater, these compounds protect sensitive electronics, such as circuit boards, semiconductors, and sensors in harsh environments. They resist moisture, salt, and chemicals, so you can use them in corrosive oil, marine, and mining applications. These compounds can also be used within autoclaves. Because they are epoxies, they are rigid, resist wear, and create excellent electrical insulation. They withstand a wide range of temperatures, and this formulation won’t crack or split as components heat up and cool down.
They come in a cartridge, so you can apply them precisely. To dispense, they require a mixer nozzle and gun (both sold separately).

Dry Time | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Container Size, fl. oz. | Consistency | Touch, hrs. | Overall, hrs. | Hardness Rating | Dielectric Strength, V/mil | Temp. Range, °F | Environment | For Use On | Autoclavable | Each | |
1.69 | Thick Liquid | 12 | 24 | Extra Hard | 500 | -50° to 350° | Corrosive, Salt Spray, Submersible | Brass, Bronze, Copper, Steel, Stainless Steel, Cast Iron, Titanium, Polystyrene Plastic, Polycarbonate Plastic, Polyurethane Rubber, ABS Plastic, PVC Plastic, CPVC Plastic, PVDF Plastic, Polyimide Plastic, HDPE Plastic, Nylon Plastic, PEEK Plastic, Polyethylene Plastic, UHMW Plastic, Polypropylene Plastic, Glass | Yes | 0000000 | 000000 |

For Cartridge Size | Each | |
1.69 fl. oz. | 00000000 | 000000 |

For Cartridge Size | Each | |
1.69 fl. oz. | 00000000 | 00000 |
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 | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
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 |
Flame-Retardant Epoxy Potting Compounds
Protect circuit boards and other electronics from fire and heat. These self-extinguishing compounds meet UL 94V-0 for flame retardance and withstand temperatures up to nearly 400° F. Use them to shield components from dust, moisture, chemicals, mechanical shock, and vibration. Since they’re epoxies, they won’t break down from chemicals or moisture. They’re also excellent electrical insulators. These compounds have the consistency of honey once they’re mixed, so they seep into crevices to encase intricate components. They’re not for sale in Canada.
Cartridge compounds dispense through a mixer nozzle for precise application. Use them with a dispensing gun.
Can compounds are easier to apply in high volumes than cartridge compounds. Mix them together and pour them over components inside containers, such as a potting box. If you see air bubbles after mixing, put the mixture in a vacuum chamber to remove them.


Dry Time | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Container Size | Consistency | Touch, hrs. | Overall, hrs. | Mixer Nozzle Included | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Specifications Met | For Use On | Cannot Be Sold To | Each | |
Cartridge Compounds—Extra Hard | ||||||||||||
15.2 oz. | Thick Liquid | 2 | 48 | Yes | 395 | 0.5 | -110° to 390° | UL 94 V-0 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Fiberglass, Ceramic, Glass, Composites, Plastic, Rubber, Silver | Canada | 0000000 | 000000 |
Can Compounds—Extra Hard | ||||||||||||
3 qt. | Thick Liquid | 2 | 48 | __ | 395 | 0.5 | -110° to 390° | UL 94 V-0 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Fiberglass, Ceramic, Glass, Composites, Plastic, Rubber, Silver | Canada | 0000000 | 000000 |

For Cartridge Size, oz. | Includes | Each | |
15.2 | Built-In Plunger for 1:1 and 2:1 Mix Ratios | 0000000 | 0000000 |
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.
Container | Dry Time | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | 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 | Each | |
Loctite® Compounds—Soft | ||||||||||||||
5145 | 3 | Tube | Thick Liquid | 2 min. | 72 | 450 | 0.2 | -45° to 390° | MIL-A-46146 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | White | Semi-Clear | 0000000 | 000000 |
5145 | 10.1 | Cartridge | Thick Liquid | 2 min. | 72 | 450 | 0.2 | -45° to 390° | MIL-A-46146 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | White | Semi-Clear | 0000000 | 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 | |||||||||
---|---|---|---|---|---|---|---|---|---|
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 |

Dry Time | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Container Size, fl. oz. | Consistency | Touch | Overall, hrs. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Specifications Met | For Use On | Color | Each | |
Momentive/GE Compounds—Medium Soft | ||||||||||||
RTV11 | 16 | Thick Liquid | 90 min. | 24 | 515 | 0.29 | -65° to 400° | GSA A-A-56023A | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel | White | 00000000 | 0000000 |
Momentive/GE Compounds—Medium Hard | ||||||||||||
RTV60 | 16 | Thick Liquid | 2 hrs. | 24 | 450 | 0.31 | -65° to 500° | __ | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel | Red | 00000000 | 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 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.
Container | Dry Time | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size | Type | Consistency | Touch, min. | Overall, min. | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | For Use On | Color | Each | |
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 | 0000000 |
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 |
Light-Activated Silicone Potting Compounds

These compounds dry quickly when exposed to UV light allowing you to handle the potted items sooner. Made of silicone, they’re softer and more flexible than epoxy or urethane compounds, so they’re better at protecting against shocks and vibration. They also withstand a wider range of temperatures, so they’re often used 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 abrasion or chemicals. The tapered nozzle lets you apply them precisely.
Dry Time | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Container Size, fl. oz. | Consistency | Touch, sec. | Overall, hrs. | Light Intensity Requirements to Reach Full Strength | Cure Type | Dielectric Strength, V/mil | Thermal Conductivity | Temp. Range, °F | Specifications Met | For Use On | Color | Each | |
Loctite® Compounds—Soft | ||||||||||||||
5091 | 10 1/10 | Thick Liquid | 20 | 24 | 60 sec. per side @ 40 mW/cm2 | UV Light | 450 | Not Rated | -65° to 350° | UL Recognized Component | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Fiberglass, Composites, Plastic, Silver | White | 0000000 | 0000000 |
Urethane Potting Compounds
Encase electronic assemblies in a layer of urethane for protection from dust, moisture, chemicals, mechanical shock, and vibration. Urethanes withstand a wide range of temperatures and are the best choice for cold-temperature applications. They have excellent flexibility, good chemical and moisture resistance, and provide good electrical insulation.
Cartridge potting compounds can be applied precisely through the included mixer nozzle. You’ll need a dispensing gun (sold separately). US2350™ also require a 4:1 plunger (sold separately) to dispense.

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 | |
Loctite® Compounds—Medium Hard | |||||||||||
US2350 | 1.69 | Thick Liquid | 90 | 24 | 950 | 0.51 | -40° to 250° | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Ceramic, Glass, Polycarbonate Plastic, Polyurethane Rubber, ABS Plastic, PVC Plastic, Polyimide Plastic, Garolite | Black | 0000000 | 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 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
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
Secure hardware on circuit boards while insulating current.
Cyanoacrylate adhesives dry more quickly than epoxy adhesives. They’re also known as super glue. Use them to secure coils of wire. To create adhesion, they require an accelerator (included with some adhesives).
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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Thermal Conductivity, W/m-K | Consistency | Temp. Range, °F | Color | Clarity | For Joining | Each | |
Loctite® Adhesives | ||||||||||||
382 | 0.7 | Bottle | 30 sec. | 24 hrs. | 0.1 | Thick Liquid | -65° to 210° | Clear | Clear | Metal, Plastic, Rubber | 00000000 | 000000 |
Loctite® Adhesives with Accelerator | ||||||||||||
382 | 0.7 | Bottle | 30 sec. | 24 hrs. | 0.1 | Thick Liquid | -65° to 210° | Clear | Clear | Metal, Plastic, Rubber | 00000000 | 00000 |
Optically Clear Epoxy Structural Adhesives
For invisible bond lines, these adhesives dry clear. Epoxies are the strongest and most weather- and chemical-resistant structural adhesives. Choose an epoxy that hardens quickly for fast repairs, or one that hardens slowly to allow more time for positioning.
These have two parts that must be mixed. The size listed is the combined total of the two parts. Use cartridges with a dispensing gun and mixer nozzle to simultaneously mix and dispense adhesives.
0151 and E-30CL are suitable for fiber-optic applications.

Container | Strength | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Shear, lbs./sq. in. | Peel, lbs./in. wd. | Mix Ratio | Consistency (Viscosity) | Temp. Range, °F | For Joining | Each | |
E-30CL | 1.69 | Cartridge | 30 min. | 24 hrs. | 3,100 | Not Rated | 2:1 | Thick Liquid (10,000 cP) | -65 to 250° F | Metal, Plastic, Ceramic, Glass | 0000000 | 000000 |
E-30CL | 6.76 | Cartridge | 30 min. | 24 hrs. | 3,100 | Not Rated | 2:1 | Thick Liquid (10,000 cP) | -65 to 250° F | Metal, Plastic, Ceramic, Glass | 0000000 | 00000 |
M-31CL | 1.69 | Cartridge | 30 min. | 24 hrs. | 3,100 | Not Rated | 2:1 | Thick Liquid (6,000 cP) | -65 to 300° F | Metal, Plastic, Rubber, Glass | 0000000 | 00000 |
Each | ||
Mixer Nozzle for 1.69 fl. oz. Loctite® Cartridges | 00000000 | 00000 |
Mixer Nozzle for 6.76 fl. oz. Loctite® Cartridges | 0000000 | 0000 |
Dispensing Gun for 1.69 fl. oz Loctite® Cartridges | 00000000 | 00000 |
Dispensing Gun for 6.76 fl. oz. Loctite® Cartridges | 0000000 | 000000 |
Air-Powered Dispensing Gun for 1.69 fl. oz. Loctite® Cartridges | 000000000 | 000000 |
Moisture-Resistant Light-Activated Instant-Bond Adhesives

Moisture, humidity, and immersion in water won't degrade the bond of these adhesives. For easy positioning, they begin to harden only when exposed to light. Use a dispensing gun with plunger (sold separately) to dispense adhesive.
Container | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Light Intensity Requirements to Reach Full Strength | Cure Type | Consistency (Viscosity) | Temp. Range, °F | Color | For Joining | Each | |
Loctite® Adhesives | ||||||||||||
3494 | 0.84 | Syringe | 5 sec. | 30 sec. | 10 sec. @ 6 mW/cm2 | UV Light, Visible Light | Thick Liquid (6,000 cP) | -65° to 300° | Clear | Glass, Metal | 00000000 | 000000 |
Dispensing Gun with Plunger | 0000000 | Each | 000000 |
Light-Activated Instant-Bond Adhesives


For easy positioning, these adhesives begin to harden only when exposed to light.
Thick liquids fill large gaps and won't drip on vertical surfaces.
Use adhesives in syringes with a dispensing gun with plunger (sold separately).
Container | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Light Intensity Requirements to Reach Full Strength | Cure Type | Consistency (Viscosity) | Temp. Range, °F | Color | For Joining | Each | |
Loctite® Adhesives | ||||||||||||
349 | 1.69 | Bottle | 5 sec. | 30 sec. | 8 sec. @ 10 mW/cm2 | UV Light | Thick Liquid (9,750 cP) | -65° to 260° | Light Yellow | Glass, Metal | 00000000 | 000000 |
3556 | 0.84 | Syringe | 5 sec. | 1 hrs. | 5 sec. @ 500 mW/cm2 | Visible Light | Thick Liquid (5,000 cP) | -65° to 300° | Light Yellow | Metal, Plastic | 0000000 | 000000 |