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.
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 | |
Rutland 500ºF RTV High Heat Silicone | ||||||||||||||
76 | 2.7 | Tube | 10 min. | 24 hrs. | 500% | Not Rated | Soft (Durometer 25A) | -70° to 500° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Rubber Rubber to Glass Glass Masonry Wood | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600, MIL-A-46106 Group I Type I, NSF/ANSI 51 | Opaque | Black | 00000000 | 000000 |
76 | 10.3 | Cartridge | 10 min. | 24 hrs. | 500% | Not Rated | Soft (Durometer 25A) | -70° to 500° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Rubber Rubber to Glass Glass Masonry Wood | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600, MIL-A-46106 Group I Type I, NSF/ANSI 51 | __ | 00000000 | 00000 | |
Silicone | ||||||||||||||
__ | 2.8 | Tube | 10 min. | 24 hrs. | 500% | -25% to 25% | Soft (Durometer 22A) | -60° to 400° | Metal | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600 | __ | 00000000 | 0000 | |
__ | 9.8 | Cartridge | 5 min. | 24 hrs. | Not Rated | -25% to 25% | Not Rated | -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 | Semi-Clear | Stainless Steel | 0000000 | 00000 |
__ | 9.8 | Cartridge | 5 min. | 24 hrs. | Not Rated | -25% to 25% | Not Rated | -40° to 350° | Metal Metal to Plastic Metal to Glass Plastic Plastic to Glass Glass | ASTM C920 Type S Grade NS Class 25 | __ | 000000 | 00000 | |
__ | 10.1 | Cartridge | 10 min. | 24 hrs. | 500% | -25% to 25% | Soft (Durometer 22A) | -60° to 400° | Metal | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600 | __ | 00000000 | 0000 |
PR-1200 Primer for Dow Corning 700, 732, 733, 736, Loctite®, 76435T21, 76435T11, and 7545A611 Sealants (10.9 fl. oz. Bottle) | 0000000 | Each | 000000 |
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.
Product labeling requirements restrict sales to the listed areas.
Container | ||||||||||||||||
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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 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 |
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 | Outside United States | 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 | Outside United States | 00000000 | 00000 |
Primer for Dow Corning Sealants (16 fl. oz. Bottle) | 0000000 | Each | 000000 |
Sealants

These sealants are non-sagging, so they won't drip from vertical and overhead surfaces.
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. For high-wear applications, choose a harder sealant for the most abrasion resistance.
Container | Each | ||||||||||||
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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 | 1-11 | 12-Up | |
Hybrid Polymer | |||||||||||||
10.1 | Cartridge | 5 min. | 3 days | 500% | -25% to 25% | 400 | Medium (Durometer 50A) | -40° to 190° | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass Masonry Wood | 0000000 | 00000 | 00000 | |
Polyurethane | |||||||||||||
10.1 | Cartridge | 3 hrs. | 24 hrs. | 880% | -25% to 25% | 200 | Medium (Durometer 45A) | -20° to 150° | Metal Metal to Plastic Metal to Rubber Metal to Composites Plastic Plastic to Rubber Rubber Rubber to Composites Asphalt Composites Masonry Wood | 0000000 | 0000 | 0000 |
Optically Clear Sealants

Clear enough to read through, these UV-resistant sealants allow optimal light transmission for use with solar cells and fiber optics. Sealants are 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.
Container | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Tensile Strength, psi | Hardness | Temp. Range, °F | For Joining | Each | |
Hybrid Polymer | |||||||||||
10.1 | Cartridge | 10 min. | 3 days | 300% | -25% to 25% | 300 | Medium Soft (Durometer 38A) | -40° to 200° | Metal Wood | 0000000 | 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.
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 | ||||||||||||
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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 | Cartridge | 5 min. | 14 days | Not Rated | -25% to 25% | Not Rated | -20° to 190° | Metal Metal to Plastic Plastic Asphalt Masonry Wood | White | CA | 0000000 | 000000 | 000000 |
10 | Cartridge | 10 min. | 7 days | Not Rated | -25% to 25% | Not Rated | -65° to 190° | Metal Metal to Plastic Plastic Asphalt Masonry Wood | Clear | __ | 0000000 | 00000 | 00000 |
10 | Cartridge | 8 hrs. | 14 days | 550% | -25% to 25% | Soft (Durometer 22A) | -20° to 200° | Metal Metal to Plastic Metal to Composites Plastic Plastic to Composites Composites Masonry Wood | __ | 000000 | 00000 | 00000 |
Clean Room Sealants

Meeting requirements for semiconductor, biomedical, and electronics clean rooms, these sealants won’t contaminate air and surfaces. Elongation and joint compression/expansion tolerance indicate flexibility—the higher the values are, the more joint movement sealants can sustain.
Container | ||||||||||||
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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 | |
Polyether | ||||||||||||
10.1 | Cartridge | 20 min. | 7 days | 275% | -25% to 25% | Medium Soft (Durometer 38A) | -40° to 200° | ASTM C920 Type S Grade NS Class 25, Fed. Spec. TT-S-00230C Type II Class B | Metal Metal to Plastic Metal to Rubber Metal to Glass Plastic Plastic to Rubber Plastic to Glass Rubber Rubber to Glass Glass Masonry Wood Wood to Glass | 000000 | 000000 |
Structural Sealants

These structural sealants combine the mechanical strength of an adhesive with excellent sealing properties and high flexibility. 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. For joints between dissimilar materials and in environments with wide temperature fluctuation, choose a sealant with a higher elongation or joint compression/expansion tolerance. For high-wear applications, choose a harder sealant for the most abrasion resistance.
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 | |
3M Polyurethane | ||||||||||||
540 | 20.3 | Sausage Pack | 90 min. | 24 hrs. | 600% | -25% to 25% | Medium Soft (Durometer 40A) | -40° to 190° | Metal Plastic Rubber Composites Wood | 00000000 | 000000 |
Caulk

Caulk is non-sagging, so it 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 a sealant can sustain. Caulk is best suited to joints between similar materials that aren't exposed to wide temperature fluctuation.
Container | Each | |||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | 1-11 | 12-Up | |
Acrylic | ||||||||||||||
10.1 | Cartridge | 10 min. | 14 days | Not Rated | -25% to 25% | Not Rated | Not Rated | -30° to 180° | ASTM C920 Type S Grade NS Class 25; Fed. Spec. TT-S-00230C Type II Class A | Metal, Asphalt, Glass, Masonry, Wood | 000000 | 00000 | 00000 | |
10.1 | Cartridge | 60 min. | 3 days | 500% | -50% to 50% | Not Rated | Not Rated | -20° to 180° | ASTM C920 Type S Grade NS Class 25; Fed. Spec. TT-S-00230C Class A | Metal, Masonry, Wood | 000000 | 0000 | 0000 |
Submersible Sealants


These non-sagging sealants will not drip while hardening on vertical and overhead surfaces. They’re marine grade, so they stand up to water, corrosion from salt spray, mildew, and UV light.
Silicone sealant is FDA compliant for direct contact with food. It will not harm fish, so it's safe for use in aquariums. It's also known as 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 | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
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 | |
Silicone | ||||||||||||
2.8 | Tube | 5 min. | 48 hrs. | Not Rated | -25% to 25% | Not Rated | -40° to 400° | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600 | Metal Plastic Rubber Glass | Clear | 0000000 | 00000 |
10.3 | Cartridge | 20 min. | 24 hrs. | 500% | -25% to 25% | Soft (Durometer 26A) | -40° to 400° | ASTM C920 Type S Grade NS Class 25, FDA Compliant 21 CFR 177.2600 | Metal Glass Wood | 0000000 | 0000 |
Concrete Joint Sealants


Seal joints and gaps in concrete. These sealants are 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. These sealants are best suited to joints between similar materials that aren't exposed to wide temperature fluctuation.
Container | For Max. Crack | ||||||||||||||
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Mfr. Model No. | Size, fl. oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Hardness | Wd. | Dp. | Application Temp. Range, °F | Temp. Range, °F | For Joining | Color | Each | |
3M Polyurethane | |||||||||||||||
525 | 10.5 | Cartridge | 90 min. | 24 hrs. | 600% | Not Rated | Soft (Durometer 25A) | 1" | 1/2" | 40° to 95° | -20° to 175° | Metal, Plastic, Masonry, Wood | Gray | 0000000 | 000000 |
525 | 20.3 | Sausage Pack | 90 min. | 24 hrs. | 600% | Not Rated | Soft (Durometer 25A) | 1" | 1/2" | 40° to 95° | -20° to 175° | Metal, Plastic, Masonry, Wood | Gray | 0000000 | 00000 |