About Sealant Flexibility
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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.
When Dow Corning 700 requires a primer, for best results use PR-1200 on metal and PR-1205 on plastic.
Container | ||||||||||||||
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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 | ||||||||||||||
700 | 10.1 | Cartridge | 15 min. | 24 hrs. | 575% | -25% to 25% | Soft (Durometer 20A) | -75° to 350° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass | FDA Compliant 21 CFR 177.2600, NSF/ANSI 51, UL Recognized Component | __ | 000000 | 00000 | |
732 | 3 | Tube | 20 min. | 24 hrs. | 600% | -25% to 25% | Soft (Durometer 25A) | -75° to 350° | Metal Metal to Plastic Metal to Glass Plastic Glass | FDA Compliant 21 CFR 177.2600, MIL-A-46106 Group I Type I, NSF/ANSI 51, NSF/ANSI 61, UL Listed | __ | 000000 | 0000 | |
732 | 4.7 | Tube | 20 min. | 24 hrs. | 600% | -25% to 25% | Soft (Durometer 25A) | -75° to 350° | Metal Metal to Plastic Metal to Glass Plastic Glass | FDA Compliant 21 CFR 177.2600, MIL-A-46106 Group I Type I, NSF/ANSI 51, NSF/ANSI 61, UL Listed | __ | 00000000 | 00000 | |
732 | 10.1 | Cartridge | 20 min. | 24 hrs. | 600% | -25% to 25% | Soft (Durometer 25A) | -75° to 350° | Metal Metal to Plastic Metal to Glass Plastic Glass | FDA Compliant 21 CFR 177.2600, MIL-A-46106 Group I Type I, NSF/ANSI 51, NSF/ANSI 61, UL Listed | __ | 000000 | 00000 | |
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 | 0000 | |
736 | 3 | Tube | 20 min. | 24 hrs. | 600% | -25% to 25% | Soft (Durometer 26A) | -85° to 500° | Metal | FDA Compliant 21 CFR 177.2600, MIL-A-46106 Group I Type I, NSF/ANSI 51, UL Listed | Opaque | Red | 00000000 | 00000 |
736 | 10.1 | Cartridge | 20 min. | 24 hrs. | 600% | -25% to 25% | Soft (Durometer 26A) | -85° to 500° | Metal | FDA Compliant 21 CFR 177.2600, MIL-A-46106 Group I Type I, NSF/ANSI 51, UL Listed | Opaque | Red | 00000000 | 00000 |
Mildew-Resistant Silicone Sealants
Resistant to mold and mildew, these sealants are well suited to high-humidity environments. 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.
Dow Corning 786 meets NSF/ANSI 51 standards and is FDA compliant for direct contact with food.
Container | ||||||||||||||
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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 | Color | Clarity | Each | |
Dow Corning Silicone | ||||||||||||||
786 | 10.1 | Cartridge | 20 min. | 48 hrs. | 600% | -25% to 25% | Soft (Durometer 25A) | -75° to 350° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600, NSF/ANSI 51 | White | Opaque | 00000000 | 000000 |
786 | 10.1 | Cartridge | 20 min. | 48 hrs. | 600% | -25% to 25% | Soft (Durometer 25A) | -75° to 350° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600, NSF/ANSI 51 | White | Semi-Clear | 00000000 | 00000 |
786 | 10.1 | Cartridge | 20 min. | 48 hrs. | 600% | -25% to 25% | Soft (Durometer 25A) | -70° to 350° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600, NSF/ANSI 51 | Clear | Clear | 00000000 | 00000 |
Primer for Dow Corning Sealants (16 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 | |||||||||||||
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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 | ||||||||||||
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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. | 48 hrs. | 625% | Not Rated | Medium (Durometer 45A) | -45° to 390° | Metal Plastic Glass | 0000000 | 00000 | |
3145 | 10.3 | Cartridge | 80 min. | 48 hrs. | 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 |
Structural Noncorrosive Silicone Sealants
Also known as neutral cure, this sealant won't discolor copper, brass, and concrete. It is a structural sealant that combines the mechanical strength of an adhesive with excellent sealing properties and high flexibility. It’s non-sagging, so it won't drip from vertical and overhead surfaces. Made from silicone, this sealant is RTV (room-temperature vulcanizing).
Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement a sealant can sustain. This sealant is best suited to joints between similar materials that aren't exposed to wide temperature fluctuation.
Container | |||||||||||||
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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 | Color | Each | |
Dow Corning Silicone | |||||||||||||
995 | 10.3 | Cartridge | 65 min. | 14 days | 525% | -50% to 50% | 350 | Medium Soft (Durometer 40A) | -40° to 300° | Metal | Black | 0000000 | 000000 |
995 | 20 | Sausage Pack | 65 min. | 14 days | 525% | -50% to 50% | 350 | Medium Soft (Durometer 40A) | -40° to 300° | Metal | Black | 0000000 | 00000 |
Primer (16-oz. Bottle) | 0000000 | Each | 000000 |
Structural Oil- and Fuel-Resistant Sealants
Impervious to the swelling effects of oils, fuels, and solvents, use this high-strength silicone sealant to assemble and repair fuel systems and tanks. Silicone forms a tough, rubbery, UV-resistant seal that remains flexible over time. It's non-sagging, so it won't drip from vertical and overhead surfaces. Also known as RTV (room-temperature vulcanizing).
Elongation and joint expansion/compression tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain. This sealant is best suited to joints between similar materials that aren't exposed to wide temperature fluctuation.
Container | |||||||||||||
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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 | Color | Each | |
Dow Corning Silicone | |||||||||||||
730 FS | 3 | Tube | 12 min. | 24 hrs. | 200% | Not Rated | 300 | Medium Soft (Durometer 40A) | -70° to 350° | Metal, Plastic, Rubber, Composites, Masonry | White | 0000000 | 0000000 |
730 FS | 5.8 | Cartridge | 12 min. | 24 hrs. | 200% | Not Rated | 300 | Medium Soft (Durometer 40A) | -70° to 350° | Metal, Plastic, Rubber, Composites, Masonry | White | 0000000 | 000000 |
Structural Glass Sealants
Make seals that support glass under heavy loads in equipment and buildings. These sealants are also known as glazing compounds. They’re non-sagging, so they won't drip from vertical and overhead surfaces. Made from silicone, sealants are RTV (room-temperature vulcanizing).
Joint compression/expansion tolerance indicates flexibility—the higher the value is, the more joint movement a sealant can sustain.
Container | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Joint Compression/ Expansion Tolerance | Tensile Strength, psi | Hardness | Application Temp. Range, °F | Temp. Range, °F | For Joining | Choose a Color | Each | |
Dow Corning Silicone | |||||||||||||
795 | 10.3 | Cartridge | 3 hrs. | 14 days | -50% to 50% | 60 | Medium Soft (Durometer 35A) | -20° to 120° | -40° to 300° | Metal | 0000000 | 000000 | |
795 | 20 | Sausage Pack | 3 hrs. | 14 days | -50% to 50% | 60 | Medium Soft (Durometer 35A) | -20° to 120° | -40° to 300° | Metal | 0000000 | 00000 |
UV-Resistant Glass Sealants
These sealants don't degrade in sunlight. Also known as glazing compounds, use these sealants to install glass in framing. They’re non-sagging, so they won't drip from vertical and overhead surfaces. Made from silicone, these sealants are RTV (room-temperature vulcanizing).
Elongation and joint compression/expansion tolerance indicate flexibility. For joints between dissimilar materials and in environments with wide temperature fluctuation, choose a sealant with a higher elongation or joint compression/expansion tolerance.
Container | |||||||||||||
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Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Hardness | Temp. Range, °F | Specifications Met | For Joining | Choose a Color | Each | |
Dow Corning Silicone | |||||||||||||
791 | 10.3 | Cartridge | 15 min. | 14 days | Not Rated | -50% to 50% | Soft (Durometer 25A) | -40° to 300° | ASTM C920 Type S Grade NS Class 50 | Metal Metal to Glass | 0000000 | 000000 | |
999A | 10.3 | Cartridge | 10 min. | 7 days | Not Rated | -25% to 25% | Soft (Durometer 25A) | -75° to 350° | __ | Metal Metal to Glass | 0000000 | 0000 |
Sealant Primers
Prepare joints and surfaces to ensure proper sealant adhesion.
Container | |||||||
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Mfr. Model No. | Size | Type | Drying Time | For Use On | Choose a Color | Each | |
Dow Corning Primers | |||||||
P5200 | 12 fl. oz. | Bottle | 2 hrs. | Stainless Steel, Steel, Cast Iron, Galvanized Steel, ABS Plastic, Polycarbonate Plastic, Polystyrene Plastic, Polyurethane Rubber, PVC Plastic, Glass, CPVC Plastic, PETG Plastic, PVDF Plastic, Polyimide Plastic, EPDM Rubber, SBR Rubber, Ceramic, Masonry, Wood, Iron, Silicone Rubber, Galvanized Iron | 00000000 | 0000000 | |
PR-1200 | 10.9 fl. oz. | Bottle | 2 hrs. | Aluminum, Brass, Bronze, Copper, Stainless Steel, Steel, Titanium, Cast Iron, Galvanized Steel, ABS Plastic, Polycarbonate Plastic, Polystyrene Plastic, Polyurethane Rubber, PVC Plastic, Glass, CPVC Plastic, PETG Plastic, PVDF Plastic, Polyimide Plastic, EPDM Rubber, SBR Rubber, Ceramic, Masonry, Wood, Iron, Silicone Rubber, Galvanized Iron | 00000000 | 00000 | |
PR-1205 | 12.3 fl. oz. | Bottle | 2 hrs. | Aluminum, Stainless Steel, Steel, Cast Iron, Galvanized Steel, ABS Plastic, Polycarbonate Plastic, Polystyrene Plastic, PVC Plastic, CPVC Plastic, PETG Plastic, PVDF Plastic, Polyimide Plastic, Ceramic, Iron, Galvanized Iron | Yellow | 0000000 | 00000 |
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 | |
Silicone | |||||||||||||
9.4 | Cartridge | 20 min. | 24 hrs. | Not Rated | -25% to 25% | Not Rated | Soft (Durometer 26A) | -60° to 400° | Fed. Spec. TT-S-001543A Class A, Fed. Spec. TT-S-00230C Class A | Metal Metal to Plastic Metal to Rubber Metal to Composites Plastic Rubber Composites | 0000000 | 0000 |
Primer for Dow Corning Sealant (16 fl. oz. Bottle) | 0000000 | Each | 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 meet UL 94 V-0 have passed a test for flame retardance.
Container | Dry Time | |||||||||||||
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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 | |
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 |