About Sealant Flexibility
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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 | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | 7436A41 | 000000 |
| 995 | 20 | Sausage Pack | 65 min. | 14 days | 525% | -50% to 50% | 350 | Medium Soft (Durometer 40A) | -40° to 300° | Metal | Black | 7436A38 | 00000 |
| Primer (16-oz. Bottle) | 7442A23 | Each | 000000 |
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 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | ||||||||||||
| 10.1 | Cartridge | 30 min. | 24 hrs. | 475% | -25% to 25% | Soft (Durometer 20A) | -75° to 400° | FDA Compliant 21 CFR 175.105, FDA Compliant 21 CFR 177.2600, Fed. Spec. TT-S-001543A Class A, Fed. Spec. TT-S-00230C Type II Class A, NSF/ANSI 51 | Metal Metal to Glass Plastic Plastic to Glass Rubber Rubber to Glass Composites Composites to Glass Glass Wood Wood to Glass | 6937T92 | 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 | |
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 | 1919N16 | 00000 | |