Red Devil Heat Resistant RTV Silicone Sealant, 10.1 oz - Industrial

In this review of the Red Devil Heat Resistant RTV Silicone Sealant, the reviewer finds it most useful for industrial and appliance repair where prolonged high-temperature exposure is expected. The single biggest reason to buy is its proven heat resistance and flexibility: formulated with iron oxide, it stands up to intermittent temperatures up to 600 F and constant exposure to 500 F while remaining water-resistant and non-slumping. The 10.1 oz tubes in this 12 pack and the bright red color for easy identification make it convenient for repeated maintenance tasks on ovens, boilers and flues.

Key Features

• High temperature tolerance: The formulation resists extreme heat and tolerates intermittent exposure to 600 F and continuous use to 500 F, making it suitable for ovens and heating equipment.
• Industrial adhesion: It adheres to glass, metal, porcelain, most painted surfaces and many plastics, so it bonds reliably to common oven and appliance materials.
• Non-slumping, durable seal: The one-component RTV cures to a rubbery solid that will not crack, shrink or peel, providing a long-lasting water-resistant seal.
• Easy identification: The red color helps technicians and maintenance crews quickly spot where heat-resistant sealant has been applied for inspection or rework.
• Made in the USA with longevity: Backed by a long durability claim, the product is intended to remain flexible and resist vibration for years in demanding environments.

Who It's For

This sealant is aimed at industrial maintenance technicians, appliance repair professionals, and serious DIYers who need a reliable silicone that tolerates continuous heat and forms a resilient seal. It is especially well suited for sealing oven windows, flues, heating elements, flanged pipe joints and access doors where elevated temperatures and vibration are common.

Those who should look elsewhere include users seeking a clear or neutral cosmetic finish, since the product is distinctly red, and projects that require FDA food-grade or high-purity silicone without added pigments, as the iron oxide formulation is optimized for heat resistance rather than colorless appearance.

Pros & Cons

Pros

• Very good heat resistance for intermittent and continuous high-temperature applications.
• Strong adhesion to a wide range of surfaces common in industrial equipment.
• Non-slumping, waterproof formula that is designed to remain flexible and durable over time.
• Bright red color aids identification during installation and inspection.

Cons

• Color may be undesirable where a neutral or clear seal is required.
• A few users report variable durability in certain installations, so surface preparation and application technique are important.

Specifications

Brand	Red Devil
Product type	100% Heat Resistant RTV Silicone Sealant
Volume per tube	10.1 oz
Pack size	12 pack
Temperature resistance	Up to 600 F intermittent, 500 F constant
Color	Red
Made in	USA

Our Verdict

The Red Devil Heat Resistant RTV Silicone Sealant is a smart choice for professionals and experienced DIYers who need a durable, high-temperature seal that stays flexible under vibration. It offers strong adhesion, robust heat tolerance and the practical benefit of a red color for quick identification, making it good value for industrial and appliance maintenance tasks where appearance is secondary to performance.

Frequently Asked Questions

Can this silicone be used on oven windows and frames?
Yes. It adheres to glass and many painted and metal surfaces and is formulated to resist temperatures commonly found in ovens and similar appliances.

Is the red color removable or paintable after cure?
The product cures to a rubbery red seal; the pigment is integral to the compound so it is not intended to be removed, and paint adhesion will depend on the paint and surface preparation.

Does it remain waterproof over time?
Yes. The non-slumping, water-resistant formula is designed to provide a long-lasting waterproof seal when applied to clean, dry surfaces following proper surface preparation.