Discover DAP’s HVAC Sealants & Celebrate HVAC Techs

This past Sunday, June 22, 2025, marked National HVAC Tech Day, a day dedicated to honouring the hard work and dedication of HVAC professionals. These dedicated tradespeople work behind the scenes to keep our homes, businesses, and workplaces comfortable throughout the year, whether they are combating the summer heat or enduring the frigid winter.

At DAP, we recognize the challenges HVAC professionals face daily. From diagnosing complex system issues to maintaining energy efficiency and ensuring safety, your expertise is crucial. As a token of our appreciation, we are committed to providing products designed to make your job easier, faster, and more efficient.

How DAP Supports HVAC Professionals

When it comes to HVAC systems, reliability isn’t just a preference; it’s a necessity. Whether you're servicing ducts, sealing vents, or dealing with challenging temperature extremes, you need sealants you can trust to perform. Enter DAP’s HVAC silicone sealants, professional-grade products designed to tackle the unique challenges of HVAC applications.

Below, we’ll explore two of DAP's stand-out sealants and their features so you can make an informed choice for your toolbox.

HVAC Professional 100% RTV Silicone Sealant

Perfect for applications in heating, ventilation, and air conditioning, HVAC Professional Silicone Sealant sets itself apart with unmatched versatility and durability. Engineered to handle extreme temperature fluctuations without cracking or shrinking, it delivers a long-lasting, weather-resistant seal that professionals can rely on.

Why Choose DAP HVAC Professional Silicone Sealant?

• Wide Temperature Range: Remains flexible in conditions as low as -40°C and as high as 246°C.
• Certified & Safe: Meets NSF/ANSI Standard #51 and FDA Regulation 21 CFR 177.2600, ensuring it’s safe for incidental food contact.
• Weather-Resistant: 100% waterproof and built to withstand extreme weather conditions, making it ideal for both interior and exterior use.
• Exceptional Durability: Won't crack, shrink, or lose its integrity over time.

Top Use Cases

• Air conditioners and furnaces
• Ducts and vents
• Access doors
• Refrigerators and flanged pipe joints

Designed with HVAC pros in mind, this all-weather sealant handles the full range of tasks your work demands

HIGH TEMP 100% RTV Silicone Sealant

Extreme temperatures need a sealant that doesn’t sweat under pressure. HIGH TEMP Silicone Sealant is your go-to solution for high-temperature applications. Whether you’re sealing industrial ovens, boilers, or flues, this sealant provides the ultimate long-lasting performance, even at temperatures soaring to 285°C intermittently.

What Makes DAP High Temp Silicone a High-Performance Standout?

• Unmatched Heat Resistance: Capable of withstanding temperatures ranging from -40°C to 260°C (and up to 285°C intermittently).
• Certified Quality: Meets ASTM C920 and NSF/ANSI Standard #51, safe for incidental food contact.
• Supreme Flexibility: Formulated to remain flexible without cracking under intense heat conditions.
• 100% Waterproof: Delivers a durable seal that’s both water and weather resistant.

Top Use Cases

• Industrial ovens and oven belts
• Heating elements and burners
• Boilers and flues
• Fired heaters and form-in-place gaskets

For professionals working in scorching conditions, HIGH TEMP Sealant takes the heat and performs like a pro.

Why HVAC Pros Choose DAP

Both the HVAC and High Temp Silicone Sealants deliver unbeatable flexibility, adhesion, and durability, making them indispensable for demanding HVAC and industrial environments. Here’s why DAP stands out as the professional’s choice in sealants:

• Ease of Use: Our gunnable, non-sag formulas ensure clean, precise applications with minimal effort.
• Safety First: Certified safe for incidental food contact, meeting rigorous food safety standards for use in food storage and preparation areas.
• Proven Performance: Built to withstand the toughest conditions while maintaining durability and integrity.
• Broad Material Compatibility: Ideal for everything from industrial ovens to home furnaces, DAP sealants bond effortlessly to a wide range of materials, including metals, ceramics, glass, fibreglass, and more.

Thank You, HVAC Technicians

On National HVAC Tech Day, we want to express our gratitude to all the HVAC professionals who keep us cool in the summer, warm in the winter, and breathing clean air year-round.

Your expertise and dedication inspire us at DAP to create products that make your job easier. With HVAC PROFESSIONAL and HIGH TEMP RTV Silicone Sealants, specifically designed for reliability and performance, we’re proud to support your hard work. Explore our sealants and tackle your next project with confidence and ease.

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