Color

Clear

White

Size

10oz

Price

In stock
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OSI HM270 Construction Silicone Sealant is a powerful silicone sealant designed for tough jobs. It works well in extreme temperatures, from -76°F to 350°F, staying flexible and strong even in harsh conditions. This sealant is perfect for non-porous surfaces, making it ideal for sealing skylights, solar panels, duct work, aluminum siding, and more.

Key Features of OSI HM270 Construction Adhesive

Temperature Resilience: Withstands temperatures from -76°F to 350°F.
Flexibility: Stays permanently flexible with a joint movement capability of +/- 25%.
Water-Resistant: Creates a watertight and weatherproof seal.
Easy Application: Smooth application in all weather conditions.
Durable Bond: Sticks well to glass, aluminum, ceramics, primed steel, and some plastics.

Benefits of Using OSI HM270 Silicone Sealant

Versatile Use: Great for many applications, including window sealing and other silicone needs.
Long-Lasting Performance: Resists UV light and tough weather, ensuring long-term reliability.
No Primer Needed: Usually adheres well without needing a primer.

Recommended Applications for OSI HM270 Sealant

Glazing and Sealing: Ideal for structural glazing, curtain wall sealing, and more.
Tough Environments: Perfect for sealing skylights, solar panels, duct work, RVs, and aluminum siding.

Limitations of OSI HM270 Construction Silicone Sealant

Do not use on concrete, marble, brass, copper, oily woods, limestone, brick, lead, polyethylene, polypropylene, PTFE, areas with continuous water, horizontal joints that need abrasion resistance, confined spaces, green or vulcanized rubber, potable water systems, reflective coatings on mirrors, or places that require paint.