Honda Hondabond HT high-temperature OEM RTV silicone gasket maker 85g tube — heat & oil resistant

This specialist RTV (room temperature vulcanizing) sealant is manufactured to Honda specifications to create durable, flexible gaskets and seam seals where heat resistance, oil and coolant compatibility, and vibration endurance are required. Hondabond HT is designed for assembly and repair tasks on engine covers, water pumps, valve covers, oil pans, thermostat housings, and other service points where a dependable OEM‑quality seal is needed.

What makes this Hondabond HT different from regular silicone sealants?

Hondabond HT is formulated to meet automotive OEM performance criteria, providing higher heat tolerance and chemical resistance than generic household silicones. It cures to a tack-free, elastic gasket that resists oil, coolant, and engine vibrations while maintaining adhesion to metal and many composites.

• High continuous temperature capability suited for engine bays.
• Designed for compatibility with Honda metals, paints, and factory finishes.
• Resists automotive fluids such as oil and antifreeze.
• Forms a flexible, vibration‑damping bead that prevents leaks.

How do I use Hondabond HT safely and effectively?

Surface preparation is essential: clean and degrease mating surfaces, remove old gasket material, and ensure surfaces are dry. Apply a uniform bead, allow the recommended skin time, assemble parts within the working window, and let the sealant fully cure before pressure testing or running the engine.

• Remove oil and residue with compatible solvent; let surfaces dry completely.
• Apply continuous bead; avoid excessive squeeze‑out that can obstruct passages.
• Follow Honda torque specs when reassembling to avoid distortion.
• Observe cure times outlined in product literature before pressurizing systems.

Will Hondabond HT work for both engine oil and coolant passages?

Yes—this product is engineered to seal where oil and coolant exposure is expected, offering resistance to both fluid types once fully cured. As with any OEM sealant, proper application and full cure are required to ensure long‑term compatibility and leak‑free performance.

• Formulated to withstand automotive fluids after cure.
• Recommended for oil pans, valve covers, water pump housings, and thermostats.
• Not intended as a permanent fix for severely damaged flanges—repair or replacement may be necessary.
• Maintain proper surface finish and flatness for best sealing results.

Who is this for? Hondabond HT is aimed at professional mechanics, Honda enthusiasts, and DIYers performing engine reassembly, routine maintenance, or gasket replacement who require an OEM‑grade sealant. Choose this product when you want a high‑temperature, fluid‑resistant RTV made to Honda specifications that helps restore factory‑level sealing integrity. If you need a universal household silicone for nonautomotive projects, a different product would be more appropriate.