XtraBondHT Red RTV Silicone Sealant, High-Temp Engine Gasket Maker

• Approved for high-temperature areas
• Non-SAF red formula (FBFX10013CRT)
• NSF/ANSI 51 – Food equipment materials
• Meets ASTM C920 Type S, Grade NS, Class 25, Use NT, G, M, A
• Federal Specs TT-S-00230C Type II, Class A; TT-S-001543A Type Non-Sag, Class A
• Aggressive adhesion to common construction substrates
• Thermal and electrical insulating properties
• Compatible with SBS flashing
• Low VOC formulation
• Typical applications: furnace vent pipes, industrial ovens, smoke stacks, engine parts, fireplaces, HVAC high-temperature seals

XtraBond®HT is a one-part, non-slumping silicone sealant engineered for continuous service from -40°F to 500°F. It cures to a flexible silicone rubber that resists sagging and provides durable, watertight seals around heating elements. Ideal for high-temperature silicone sealing applications—such as furnace vent and oven seals—XtraBond®HT also offers electrical and thermal insulation, aggressive adhesion, and compatibility with SBS flashing.

1. Surface Preparation: Ensure surfaces are clean, dry, and free of contaminants.

2. Nozzle: Cut to desired bead size.

3. Application: Use a caulking gun and press sealant firmly onto the substrate for full contact.

4. Tooling (optional): Smooth bead if needed for appearance or coverage.

5. Clean-up: Remove excess with mineral spirits or equivalent solvent.

Follow these steps for best performance of XtraBond®HT in high-temperature sealing applications.

• Clean: Remove dirt, dust, and debris.
• Dry and frost-free: Substrate must be completely dry.
• Sound: Surface should be structurally stable.
• Free of oils, grease, or incompatible coatings that hinder adhesion.

Avoid applying to damp or contaminated surfaces. Test substrates for compatibility; primers are generally not required but recommended for verification.

• Store in low humidity (<50% RH) at room temperature (73 ± 2°F) in unopened containers.
• Cartridges/sausages: use within 18 months of manufacture.

Rotate inventory to use oldest stock first to maintain product performance.