Meeco's Red Devil Direct Vent Appliance Sealant is a purpose-built solution for sealing joints and penetrations in direct-vent venting systems. Packaged in a 10.3 oz black tube, this sealant is designed to stay flexible and form a durable, airtight seal around direct-vent gas appliances, helping to minimize drafts and moisture intrusion while contributing to efficient, safe operation.
Key benefits that set it apart
- Direct-vent specific formulation that addresses the unique needs of vent connections and terminations.
- Discrete black color that blends with vent components for a cleaner, professional finish.
- Convenient 10.3 oz tube size, ideal for both small repairs and larger install work.
- Flexible, long-lasting seal that accommodates thermal movement and routine venting cycles.
- Ready-to-use, no mixing required, with smooth application that helps you achieve a consistent bead.
- Backed by the reliability of the Red Devil lineage, trusted for essential venting sealant needs.
Ideal use cases
- Sealing joints and penetrations around direct-vent gas fireplaces, boilers, and tankless water heaters.
- Repairs or resealing during installation, maintenance, or after vent system upgrades.
- Jobs where a discreet, professional-looking seal is preferred to blend with vent hardware.
How to apply
- Prepare the area: ensure joints are clean and dry.
- Cut the nozzle to the desired bead size and load the tube into the appropriate caulking device if needed.
- Apply a continuous bead along joints and penetrations, then smooth as required for a uniform seal.
- Allow to cure following the product directions on the packaging before operating the appliance.
Who should consider this product
Homeowners performing direct-vent venting work, DIYers tackling simple vent repairs, and professionals installing or servicing direct-vent gas appliances will find this sealant a practical, reliable choice. Its purpose-built design, discreet color, and user-friendly packaging help deliver a neat, durable seal you can trust in demanding venting environments.
