DOWSIL™ 991 Silicone High Performance Sealant

一种中等模量的弹性密封胶，专为耐候性敏感多孔石和金属基板。

用途:

Specially formulated to prevent staining of porous substrates such as natural stone and minimize streaking on metal panels and glass.
Forms a durable, flexible, watertight bond with most building materials and can be used for new and remedial construction applications.

Non-staining on natural stone and reduces residue rundown on metal and glass panels
Medium modulus, high movement capability - can accommodate ± 50% movement in a properly designed joint
Good unprimed adhesion to a wide variety of building materials such as natural stone, glass, metal, ceramic tile, fluorocarbon paint finishes and anodized aluminum
Outstanding UV and weathering resistance
Good working time
10-year Limited Weatherseal and Non-Staining Warranties are available
One-part easy to use formulation
Formulated to prevent staining of porous substrates and reduce streaking on glass and metal panels to improve building aesthetic performance
Excellent weathering and durability resulting in longer lifecycle and superior long-term weatherproofing
Excellent unprimed adhesion to most building substrates

这些数值为典型性能，并且不用于在规格制定过程中使用。

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