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About Sealant Flexibility
More
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 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 000000 | |
| 706 | 10.1 | Cartridge | 25 min. | 24 hrs. | 350% | -25% to 25% | Soft (Durometer 20A) | -76° to 480° | Metal Metal to Plastic Metal to Glass Plastic Glass | FDA Compliant 21 CFR 177.2600, MIL-A-46106 Group I Type I, UL Recognized Component | Opaque | Red | 0000000 | 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 | 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 |
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 |
| 595 | 2.7 | Tube | 30 min. | 24 hrs. | 350% | Not Rated | Soft (Durometer 20A) | -60° to 400° | Metal | NSF/ANSI 51 | Clear | Clear | 00000000 | 0000 |
| 595 | 6.4 | Nozzle-Top Can | 30 min. | 24 hrs. | 350% | Not Rated | Soft (Durometer 20A) | -60° to 400° | Metal | NSF/ANSI 51 | Clear | Clear | 00000000 | 00000 |
| 595 | 10.1 | Cartridge | 30 min. | 24 hrs. | 350% | Not Rated | Soft (Durometer 20A) | -60° to 400° | Metal | NSF/ANSI 51 | Clear | Clear | 0000000 | 00000 |
| SI 596 RD | 2.7 | Tube | 30 min. | 24 hrs. | 300% | Not Rated | Soft (Durometer 18A) | -60° to 600° | Metal | __ | Opaque | Red | 0000000 | 00000 |
| SI 596 RD | 10.1 | Cartridge | 30 min. | 24 hrs. | 300% | Not Rated | Soft (Durometer 18A) | -60° to 600° | Metal | __ | Opaque | Red | 0000000 | 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.
Sealants that cannot be sold to Canada are restricted by product labeling requirements.
Container | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mfr. Model No. | Size, fl. oz. | Net Weight, oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Hardness | Temp. Range, °F | For Joining | Specifications Met | Color | Clarity | Cannot Be Sold To | 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 Plastic Masonry | 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 Plastic Masonry | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600, NSF/ANSI 51 | White | Semi-Clear | __ | 00000000 | 00000 |
Silicone | ||||||||||||||||
| __ | __ | 6.5 | Nozzle-Top Can | 10 min. | 24 hrs. | 400% | -25% to 25% | Soft (Durometer 25A) | -70° 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 Wood | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600, Fed. Spec. TT-S-001543A, Fed. Spec. TT-S-00230C, MIL-A-46106 Type I, NSF/ANSI 51 | White | Opaque | Canada | 00000000 | 00000 |
| __ | 10.1 | __ | Cartridge | 10 min. | 24 hrs. | 400% | -25% to 25% | Soft (Durometer 25A) | -70° 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 Wood | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600, Fed. Spec. TT-S-001543A, Fed. Spec. TT-S-00230C, MIL-A-46106 Type I, NSF/ANSI 51 | Clear | Clear | __ | 00000000 | 00000 |
| __ | 10.1 | __ | Cartridge | 10 min. | 24 hrs. | 400% | -25% to 25% | Soft (Durometer 25A) | -70° 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 Wood | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600, Fed. Spec. TT-S-001543A, Fed. Spec. TT-S-00230C, MIL-A-46106 Type I, NSF/ANSI 51 | White | Opaque | __ | 00000000 | 00000 |
| __ | 10.1 | __ | Cartridge | 20 min. | 24 hrs. | 550% | -25% to 25% | Soft (Durometer 25A) | -40° 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 Wood | ASTM C920 Type S Grade NS Class 25, Fed. Spec. TT-S-001543A, Fed. Spec. TT-S-00230C | Red | Opaque | __ | 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 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | ||||||||||||
| 739 | 10.1 | Cartridge | 5 min. | 24 hrs. | 640% | -25% to 25% | Soft (Durometer 37A) | -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 | 000000 | |
| 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 | |
| Primer for Dow Corning 737 and 739 Sealants (16 fl. oz. Bottle) | 0000000 | Each | 000000 |
All-Weather Application Sealants

Apply these sealants on wet surfaces and in cold temperatures. They’re non-sagging, so they won't drip from vertical and overhead surfaces.
Sealants with 1,000% elongation can be applied through running water.
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 the regions listed are restricted by local chemical regulations, including limits on VOC (volatile organic compounds).
Container | Each | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Hardness | Temp. Range, °F | For Joining | Choose a Color | Cannot Be Sold To | 1-11 | 12-Up | |
Hybrid Polymer | |||||||||||||
| 10.3 | Cartridge | 45 min. | 4 days | 1,000% | Not Rated | Soft (Durometer 25A) | -40° to 180° | Metal Plastic Rubber Asphalt Composites Glass Masonry Wood | CA, Canada | 000000 | 000000 | 000000 | |
Non-Hardening Caulk
Also known as thumb-grade caulk, this forms a non-hardening, moisture-resistant seal that remains pliable.
Butyl rubber has a sticky, gummy consistency.

Black | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Mfr. Model No. | Wd. | Thick. | Lg., ft. | Tensile Strength | Hardness | Temp. Range, °F | For Joining | Number of Pieces | Each | |
| 08578 | 5/16" | 5/16" | 1 | Not Rated | Not Rated | -20° to 200° | Metal Plastic Asphalt Composites Glass Masonry Wood | 60 | 0000000 | 000000 |
| 5354 | 1/4" | 1/8" | 50 | Not Rated | Medium Hard (Durometer 60A) | -50° to 190° | Metal Metal to Plastic Metal to Glass Plastic Plastic to Glass Glass Wood Wood to Glass | 1 | 0000000 | 00000 |
| 5354 | 1/4" | 1/4" | 25 | Not Rated | Medium Hard (Durometer 60A) | -50° to 190° | Metal Metal to Plastic Metal to Glass Plastic Plastic to Glass Glass Wood Wood to Glass | 1 | 00000000 | 00000 |
| 5354 | 3/8" | 1/8" | 50 | Not Rated | Medium Hard (Durometer 60A) | -50° to 190° | Metal Metal to Plastic Metal to Glass Plastic Plastic to Glass Glass Wood Wood to Glass | 1 | 0000000 | 00000 |
| 5354 | 3/4" | 1/8" | 50 | Not Rated | Medium Hard (Durometer 60A) | -50° to 190° | Metal Metal to Plastic Metal to Glass Plastic Plastic to Glass Glass Wood Wood to Glass | 1 | 0000000 | 000000 |
Electrical Insulating Varnish

Spray these abrasion- and wear-resistant coatings on motor winding wire, transformers, and other metal electrical parts to protect them from oils, chemicals, and moisture. They are solvent based, so they dry quickly. Choose a varnish with a dielectric strength that’s greater than the voltage of the electrical equipment it protects.
Clear varnish leaves a transparent film so components can be inspected. Red and green varnish stand out for identification when used to coat wire.
Each | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Color | Dielectric Strength | Container Net Weight, oz. | Harshness | For Use On | Temp. Range, °F | Specifications Met | 1-11 | 12-Up | |
Aerosol Can—Flammable (Solvent Based) | |||||||||
| Clear | 2,300 V/mil | 15 1/4 | Harsh | Aluminum, Brass, Bronze, Chrome, Galvanized Steel, Stainless Steel, Steel | 0° to 310° | ASTM D115 | 0000000 | 000000 | 00000 |
| Red | 2,600 V/mil | 15 1/4 | Harsh | Aluminum, Brass, Bronze, Chrome, Galvanized Steel, Stainless Steel, Steel | 0° to 310° | ASTM D115 | 0000000 | 00000 | 00000 |
| Green | 2,890 V/mil | 15 1/4 | Harsh | Aluminum, Brass, Bronze, Chrome, Galvanized Steel, Stainless Steel, Steel | 0° to 310° | ASTM D115 | 0000000 | 00000 | 00000 |


























