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.
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 | |
3M Silicone | ||||||||||||||
8017 | 3 | Tube | 10 min. | 24 hrs. | 350% | Not Rated | Soft (Durometer 20A) | -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 Wood | ASTM D412 | White | Clear | 00000000 | 000000 |
8019 | 3 | Tube | 10 min. | 24 hrs. | 350% | Not Rated | Soft (Durometer 20A) | -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 Wood | ASTM D412 | Clear | Clear | 00000000 | 00000 |
8027 | 10.3 | Cartridge | 10 min. | 24 hrs. | 350% | Not Rated | Soft (Durometer 20A) | -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 Wood | ASTM D412 | White | Clear | 00000000 | 00000 |
8029 | 10.3 | Cartridge | 10 min. | 24 hrs. | 350% | Not Rated | Soft (Durometer 20A) | -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 Wood | ASTM D412 | Clear | Clear | 00000000 | 00000 |
High-Strength Fiberglass Electrical Tape

Made with fiberglass for durability and abrasion resistance, this electrical-insulating tape also withstands high temperatures. The cloth can absorb electrical insulating varnishes.
Wd. | Lg., ft. | Overall Thick. | Material | Temperature Range, °F | Dielectric Strength | Voltage Rating | Specifications Met | Color | Each | |
3M Scotch 69—Silicone Adhesive | ||||||||||
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1/2" | 66 | 0.007" | Fiberglass Cloth | 32° to 350° | Not Rated | 600V | MIL-I-19166, UL 510 | White | 00000000 | 000000 |
3/4" | 66 | 0.007" | Fiberglass Cloth | 32° to 350° | Not Rated | 600V | MIL-I-19166, UL 510 | White | 00000000 | 00000 |
1" | 66 | 0.007" | Fiberglass Cloth | 32° to 350° | Not Rated | 600V | MIL-I-19166, UL 510 | White | 00000000 | 00000 |
1 1/2" | 66 | 0.007" | Fiberglass Cloth | 32° to 350° | Not Rated | 600V | MIL-I-19166, UL 510 | White | 00000000 | 00000 |
2" | 66 | 0.007" | Fiberglass Cloth | 32° to 350° | Not Rated | 600V | MIL-I-19166, UL 510 | White | 00000000 | 000000 |