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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 | ||||||||||||
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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 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 |
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 meet UL 94 V-0 have passed a test for flame retardance.
Potting compounds that cannot be sold to California exceed local regulatory limits on VOCs (volatile organic compounds). Potting compounds that cannot be sold to Canada are restricted by product labeling requirements.
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 | Cannot Be Sold To | Each | |
Dow Corning Compounds—Medium Soft | |||||||||||||||
738 | 3 | Tube | Paste | 90 min. | 24 | 475 | Not Rated | -45° to 390° | UL Listed, UL Recognized Component, MIL-A-46146, UL 94 HB | Aluminum, Copper, Steel, Plastic, Rubber, Fiberglass | White | Opaque | __ | 0000000 | 000000 |
738 | 10.1 | Cartridge | Paste | 90 min. | 24 | 475 | Not Rated | -45° to 390° | UL Listed, UL Recognized Component, MIL-A-46146, UL 94 HB | Aluminum, Copper, Steel, Plastic, Rubber, Fiberglass | White | Opaque | __ | 0000000 | 00000 |
Dow Corning Compounds—Soft | |||||||||||||||
3165 | 10.3 | Cartridge | Paste | 4 min. | 24 | 500 | Not Rated | -45° to 390° | UL 94 V-0 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Glass | Gray | Opaque | __ | 0000000 | 00000 |
748 | 3 | Tube | Paste | 30 min. | 24 | 475 | Not Rated | -65° to 350° | UL 94 HB | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Plastic, Rubber, Composites, Fiberglass, Glass | Off-White | Opaque | __ | 000000000 | 00000 |
748 | 10.1 | Cartridge | Paste | 30 min. | 24 | 475 | Not Rated | -65° to 350° | UL 94 HB | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Plastic, Rubber, Composites, Fiberglass, Glass | Off-White | Opaque | __ | 000000000 | 00000 |
838 | 3 | Tube | Paste | 45 min. | 24 | Not Rated | Not Rated | -45° to 390° | UL Listed, UL Recognized Component, UL 94 HB | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Plastic, Rubber, Composites, Fiberglass, Ceramic, Glass | White | Opaque | __ | 0000000 | 00000 |
839 | 10.3 | Cartridge | Paste | 35 min. | 24 | Not Rated | Not Rated | -45° to 390° | __ | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Plastic, Rubber, Composites, Fiberglass, Ceramic, Glass | Blue | Semi-Clear | __ | 0000000 | 00000 |
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 | 00000 |
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 |
Momentive/GE Compounds—Soft | |||||||||||||||
RTV162 | 2.8 | Tube | Paste | 4 hrs. | 48 | 450 | 0.2 | -75° to 400° | UL Recognized Component, MIL-A-46146 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Rubber, Ceramic, Glass | White | Opaque | CA | 00000000 | 00000 |
RTV162 | 10.1 | Cartridge | Paste | 4 hrs. | 48 | 450 | 0.2 | -75° to 400° | UL Recognized Component, MIL-A-46146 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Rubber, Ceramic, Glass | White | Opaque | CA | 00000000 | 00000 |
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 | 00000 |
__ | 10.1 | Cartridge | Paste | 10 min. | 24 | 450 | Not Rated | -70° to 400° | MIL-A-46106 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Silver, Plastic, Rubber, Glass | Black | Opaque | __ | 00000000 | 00000 |
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 |
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.
Bottle compounds are a better choice for filling up new enclosures than cartridge compounds because you can pour more in at a time. They have a compartment for each component and require mixing.
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.
Dry Time | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Container Size, fl. oz. | Consistency | Touch, min. | Overall, min. | Mix Ratio | Dielectric Strength, V/mil | Thermal Conductivity, W/m-K | Temp. Range, °F | Environmental Rating | For Use On | Color | Clarity | Each | |
Bottle Compounds | |||||||||||||
8.4 | Gel | 15 | 15 | 1:1 | 500 | 0.2 | -75° to 390° | IP68 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Fiberglass, Ceramic, Glass, Composites, Plastic, Rubber | Blue | Semi Clear | 0000000 | 000000 |
33.8 | Gel | 15 | 15 | 1:1 | 500 | 0.2 | -75° to 390° | IP68 | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Titanium, Fiberglass, Ceramic, Glass, Composites, Plastic, Rubber | Blue | Semi Clear | 0000000 | 00000 |
Cartridge Compounds | |||||||||||||
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 | 00000 |