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DOWSIL 790 2GL SILICONE BUILDING SEALANT

Item #: DOWSIL7902gal
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DOWSIL 790 GRAY 2 GAL

DOWSIL 790 Silicone Building Sealant | Ultra-low-modulus sealant for new and remedial construction joint sealing

Formerly: Dow Corning 790

DOWSIL 790 is a one-part silicone formulation that cures in the presence of atmospheric moisture to produce a durable, fire-resistant, flexible and ultra-low-modulus silicone rubber building joint seal.

DOWSIL 790 Silicone Building Sealant offers outstanding unprimed adhesion to masonry and is particularly effective for sealing expansion and control joints, precast concrete panel joints, Exterior Insulation and Finish Systems (EIFS) joints, curtainwall joints, mullion joints, stone pavers, and many other construction joints. When used in accordance with Dow Corning testing recommendations, the sealant forms a durable, flexible, watertight bond with many common building materials, including combinations of stone, concrete, masonry, granite, marble, aluminum, painted substrates, and glass.

  • Excellent performance even in building joints that experience extreme movement
  • Suitable for new and remedial construction
  • Extension/compression capability of +100/-50 percent
  • Excellent weathering properties and resistance to sunlight, rain, snow, and temperature extremes
  • Excellent unprimed adhesion to masonry, concrete substrates
  • Easy to use over a wide temperature range
  • Composition - Ultra-low-modulus, one-part,neutral-cure silicone sealant.


Joint Size D x W Inches 1 Gallon 10.3 Fl. Ounce Tube 20.3 Fl. Ounce Sausage 2 Gallon 4.5 Gallon Pail
3/16 x 1/4 411 33 64 821 1848
3/16 x 3/8 272 22 43 548 1232
3/16 x 1/2 205 16 32 411 924
3/16 x 5/8 164 13 26 329 739
3/16 x 3/4 137 11 21 274 616
1/4 x 1/4 411 33 64 821 1848
1/4 x 3/8 272 22 43 548 1232
1/4 x 1/2 205 16 32 411 924
1/4 x 5/8 164 13 26 329 739
1/4 x 3/4 137 11 21 274 616
3/8 x 1/4 411 33 64 821 1848
3/8 x 3/8 272 22 43 548 1232
3/8 x 1/2 205 16 32 411 924
3/16 x 5/8 164 13 26 329 739
3/8 x 3/4 137 11 21 274 616