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Container Type Container Type |
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![]() | Cartridge |
Color Color |
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For Joining For Joining |
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For Use On For Use On |
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Clarity Clarity |
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Manufacturer Manufacturer |
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For Use Outdoors For Use Outdoors |
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Container Size Container Size |
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Type Type |
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Maximum Temperature Maximum Temperature |
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Mixing Required Mixing Required |
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Formulation Formulation |
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Reaches Full Strength Reaches Full Strength |
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Tensile Strength Tensile Strength |
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Begins to Harden Begins to Harden |
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Application Application |
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Paintable Paintable |
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Hardness Hardness |
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Hardness Rating Hardness Rating |
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Minimum Temperature Minimum Temperature |
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Manufacturer Model Number ManufacturerModel Number | Show |
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Manufacturer Model Number ManufacturerModel Number | Hide |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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Elongation Elongation |
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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.
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Mfr. Model No. | Size, oz. | Type | Begins to Harden | Reaches Full Strength | Elongation | Joint Compression/ Expansion Tolerance | Hardness | Temp. Range, °F | For Joining | Color | Each | |
3M Super Silicone | ||||||||||||
8663 | 10.3 | Cartridge | 10 min. | 24 hrs. | 550% | Not Rated | Soft (Durometer 25A) | -75° 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 | Clear | 00000000 | 000000 |