About Sealant Flexibility
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About Structural Adhesives
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Silicone Sealants




Made from silicone, these sealants are RTV (room-temperature vulcanizing). They’re non-sagging, so they won't drip from vertical and overhead surfaces.
Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain. Sealants that are good for joining dissimilar materials also work well in environments with wide temperature fluctuation.
Container | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Hardness | Temp. Range, °F | For Joining | Specifications Met | Clarity | Choose a Color | Each | |
Dow Corning Silicone | ||||||||||||||
733 | 10.1 | Cartridge | 10 min. | 24 hrs. | 500% | -25% to 25% | Soft (Durometer 25A) | -70° to 350° | Metal Metal to Plastic Metal to Glass Plastic Glass | FDA Compliant 21 CFR 177.2600, UL 94 HB | __ | 000000 | 00000 | |
Loctite® Superflex Silicone | ||||||||||||||
593 | 2.7 | Tube | 30 min. | 24 hrs. | 300% | Not Rated | Soft (Durometer 18A) | -60° to 400° | Metal | UL 94 HB | Opaque | Black | 00000000 | 00000 |
593 | 6.4 | Nozzle-Top Can | 30 min. | 24 hrs. | 300% | Not Rated | Soft (Durometer 18A) | -60° to 400° | Metal | UL 94 HB | Opaque | Black | 00000000 | 00000 |
593 | 10.1 | Cartridge | 30 min. | 24 hrs. | 300% | Not Rated | Soft (Durometer 18A) | -60° to 400° | Metal | UL 94 HB | Opaque | Black | 00000000 | 00000 |
594 | 2.7 | Tube | 30 min. | 24 hrs. | 275% | Not Rated | Soft (Durometer 14A) | -60° to 400° | Metal | UL 94 HB | Opaque | White | 00000000 | 00000 |
594 | 6.4 | Nozzle-Top Can | 30 min. | 24 hrs. | 275% | Not Rated | Soft (Durometer 14A) | -60° to 400° | Metal | UL 94 HB | Opaque | White | 00000000 | 00000 |
594 | 10.1 | Cartridge | 30 min. | 24 hrs. | 275% | Not Rated | Soft (Durometer 14A) | -60° to 400° | Metal | UL 94 HB | Opaque | White | 00000000 | 00000 |
Momentive/GE Silicone | ||||||||||||||
RTV230 A/B | 13.5 | Syringe | 5 min. | 24 hrs. | 280% | -25% to 25% | Soft (Durometer 36A) | -55° to 400° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass Masonry | UL 94 HB | Opaque | White | 00000000 | 000000 |
PR-1200 Primer for Dow Corning 700, 732, 733, 736, Loctite®, 76435T21, 76435T11, and 7545A611 Sealants (10.9 fl. oz. Bottle) | 0000000 | Each | 000000 |
Self-Leveling Silicone Sealants


Thinner than non-sagging sealants, these flow easily into cracks and have a smooth finish. Made from silicone, sealants are RTV (room-temperature vulcanizing).
Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain. Sealants that are good for joining dissimilar materials also work well in environments with wide temperature fluctuation.
Container | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Tensile Strength, psi | Hardness | Temp. Range, °F | For Joining | Choose a Color | Each | |
Dow Corning Silicone | |||||||||||||
734 | 3 | Tube | 15 min. | 24 hrs. | 315% | -25% to 25% | 215 | Soft (Durometer 27A) | -85° to 350° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass | 0000000 | 000000 | |
734 | 10.1 | Cartridge | 15 min. | 24 hrs. | 315% | -25% to 25% | 215 | Soft (Durometer 27A) | -85° to 350° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass | 0000000 | 00000 |
Primer for Dow Corning and Loctite® Sealants (16-oz. Bottle) | 0000000 | Each | 000000 |
Noncorrosive Silicone Sealants


Also known as neutral-cure sealants, these won't discolor copper, brass, and concrete. They’re non-sagging, so they won't drip from vertical and overhead surfaces. Made from silicone, sealants are RTV (room-temperature vulcanizing).
Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain. Sealants that are good for joining dissimilar materials also work well in environments with wide temperature fluctuation.
Sealants that cannot be sold to California exceed local regulatory limits on VOCs (volatile organic compounds).
Container | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Hardness | Temp. Range, °F | For Joining | Choose a Color | Each | |
Dow Corning Silicone | ||||||||||||
737 | 3 | Tube | 5 min. | 24 hrs. | 300% | -25% to 25% | Soft (Durometer 30A) | -85° to 350° | Metal Metal to Plastic Metal to Rubber Metal to Composites Metal to Glass Plastic Plastic to Rubber Plastic to Composites Plastic to Glass Rubber Rubber to Composites Rubber to Glass Composites Composites to Glass Glass | Clear | 0000000 | 000000 |
737 | 10.1 | Cartridge | 3 min. | 24 hrs. | 300% | -25% to 25% | Soft (Durometer 30A) | -85° to 350° | Metal Metal to Plastic Metal to Rubber Metal to Composites Metal to Glass Plastic Plastic to Rubber Plastic to Composites Plastic to Glass Rubber Rubber to Composites Rubber to Glass Composites Composites to Glass Glass | 000000 | 00000 | |
739 | 10.1 | Cartridge | 5 min. | 24 hrs. | 640% | -25% to 25% | Soft (Durometer 35A) | -65° to 300° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass | 0000000 | 00000 | |
832 | 10.1 | Cartridge | 50 min. | 24 hrs. | 420% | -25% to 25% | Soft (Durometer 35A) | -65° to 300° | Metal Metal to Plastic Metal to Glass Plastic Plastic to Glass Glass Masonry | 0000000 | 00000 | |
3145 | 3 | Tube | 80 min. | 7 days | 625% | Not Rated | Medium (Durometer 45A) | -45° to 390° | Metal Plastic Glass | 0000000 | 00000 | |
3145 | 10.3 | Cartridge | 80 min. | 7 days | 625% | Not Rated | Medium (Durometer 45A) | -45° to 390° | Metal Plastic Glass | 0000000 | 000000 | |
9-1363 | 10.1 | Cartridge | 5 min. | 24 hrs. | 350% | -25% to 25% | Soft (Durometer 30A) | -65° to 350° | Metal | 000000 | 00000 |
Primer for Dow Corning 737 and 739 Sealants (16 fl. oz. Bottle) | 0000000 | Each | 000000 |
HVAC Sealants

Form flexible water-resistant seals on metal, plastic, and rubber joints in heating, ventilation, air conditioning, and refrigeration applications. These sealants are non-sagging, so they won't drip from vertical and overhead surfaces. Made from silicone, sealants are RTV (room-temperature vulcanizing).
Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain.
Container | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Tensile Strength, psi | Hardness | Temp. Range, °F | Specifications Met | For Joining | Choose a Color | Each | |
Dow Corning Silicone | |||||||||||||
10.3 | Cartridge | 5 min. | 24 hrs. | 600% | -25% to 25% | 325 | Soft (Durometer 27A) | -40° to 350° | UL Listed, FDA Compliant 21 CFR 177.2600, UL 94 HB | Metal Metal to Plastic Metal to Rubber Metal to Composites Plastic Rubber Composites | 000000 | 000000 |
Primer for Dow Corning Sealant (16 fl. oz. Bottle) | 0000000 | Each | 000000 |
Quick-Set Epoxy Structural Adhesives
For quick repairs, these epoxies begin to harden in 6 minutes or less. Epoxies are the strongest and most weather- and chemical-resistant structural adhesives.
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.

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 | Color | For Joining | Each | |
DP100 | 1.64 | Cartridge | 5 min. | 48 hrs. | 750 | 2 | 1:1 | Thick Liquid (12,000 cP) | -65° to 320° | Clear | Metal, Plastic, Rubber | 0000000 | 000000 |
DP100 | 6.76 | Cartridge | 5 min. | 48 hrs. | 750 | 2 | 1:1 | Thick Liquid (12,000 cP) | -65° to 320° | Clear | Metal, Plastic, Rubber | 0000000 | 00000 |
Each | ||
Mixer Nozzle for 1.64 fl. oz. 3M Cartridges (Step Tip) | 0000000 | 00000 |
Mixer Nozzle for 1.64 fl. oz. 3M Cartridges (Taper Tip) | 0000000 | 0000 |
Mixer Nozzle for 6.76 fl. oz. 3M Cartridges | 0000000 | 0000 |
Replacement Plunger for 1.64 fl. oz. 3M Cartridges | 0000000 | 00000 |
Dispensing Gun for 1.64 fl. oz. 3M Cartridges | 0000000 | 000000 |
Dispensing Gun for 6.76 fl. oz. 3M Cartridges | 0000000 | 000000 |
Air-Powered Dispensing Gun for 1.64 fl. oz. 3M Cartridges | 0000000 | 000000 |
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.
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.
DP100 Plus, DP105, and epoxy in 4.5-oz. tubes bond dissimilar materials.

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 | |
DP100 Plus | 1.64 | Cartridge | 3 min. | 48 hrs. | 1,700 | 13 | 1:1 | Thick Liquid (8,750 cP) | -65 to 300° F | Metal, Metal to Plastic, Metal to Rubber, Plastic, Plastic to Rubber, Rubber | 0000000 | 000000 |
Each | ||
Mixer Nozzle for 1.64 fl. oz. 3M Cartridges (Step Tip) | 0000000 | 00000 |
Mixer Nozzle for 1.64 fl. oz. 3M Cartridges (Taper Tip) | 0000000 | 0000 |
Replacement Plunger for 1.64 fl. oz. 3M Cartridges | 0000000 | 00000 |
Dispensing Gun for 1.64 fl. oz. 3M Cartridges | 0000000 | 000000 |
Air-Powered Dispensing Gun for 1.64 fl. oz. 3M Cartridges | 0000000 | 000000 |
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 | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | |||||||||||||||
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 |
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 |
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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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 |
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 |
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 | Specifications Met | For Use On | Color | Each | |
ES2500 | 1.7 | Thin Liquid | 10 | 16 | 410 | 0.28 | -40° to 220° | UL 94 HB | Aluminum, Brass, Bronze, Copper, Steel, Stainless Steel, Plastic, Ceramic, Glass | Black | 0000000 | 000000 |
Dispensing Gun for 1.7 fl. oz. Cartridges | 00000000 | Each | 000000 |