Elring Dirko HT Red - High-Temperature Liquid Gasket

Key Features and Specifications of Dirko HT Red

• Chemical Basis and Curing:

  • Silicone Base: Dirko HT Red is based on a high-quality silicone formula that cures neutrally at room temperature. This ensures that the product does not produce acidic by-products, reducing the risk of corrosion and enhancing safety when used on metal surfaces.
  • Single-Component: The sealant is ready to use directly from the package without the need for mixing or activation. This makes it easy to handle and apply without additional tools or preparation.
  • Room Temperature Vulcanized (RTV): This means that Dirko HT Red cures through contact with air humidity at room temperature, forming a durable, flexible seal that withstands high temperatures and extreme conditions.

• Temperature Resistance:

  • Wide Temperature Range: Dirko HT Red can be used in temperatures ranging from -50°C to +250°C and can withstand short-term peaks up to +315°C. This makes the product particularly suitable for applications where extreme heat is a constant factor, such as in engines, exhaust systems, and other high thermal load environments.
  • Long-Term Performance: The sealant retains its elasticity and adhesion even with prolonged exposure to high temperatures, which is crucial for ensuring reliable seals in demanding environments.

• Chemical Resistance:

  • Resistant to Various Chemicals: Dirko HT Red is designed to resist a wide range of chemicals, including mineral oils, synthetic oils, lubricants, coolants, UV radiation, saltwater, and cleaning agents. This extensive chemical resistance makes the product suitable for use in engines, transmissions, and other systems exposed to aggressive substances.

• Physical Properties:

  • Shore A Hardness: The Shore A hardness of Dirko HT Red is 35 ± 5, indicating that the sealant is soft enough to remain flexible but firm enough to provide a reliable seal.
  • Density: With a density of approximately 1.01 g/ml, Dirko HT Red is lightweight yet strong, contributing to the durability of the seal without adding extra weight to the application.
  • Elastic Modulus: The sealant has an elastic modulus of 0.5 ± 0.1 N/mm², reflecting good elasticity and the ability to absorb stresses without cracking.
  • Elongation at Break: With an elongation at break of 500 ± 100%, Dirko HT Red can accommodate significant deformations, making it ideal for applications where movement and expansion are common.
  • Tensile Strength: The tensile strength of Dirko HT Red is 2.3 ± 0.2 N/mm², indicating that the product has strong adhesion and can withstand mechanical stresses.

• Media Resistance:

  • Durability Under Load: Tests have shown that Dirko HT Red maintains its physical properties even after prolonged exposure to high temperatures and chemical influences such as motor oil and water-glycol mixtures. This makes it a reliable choice for applications where constant exposure to aggressive media is unavoidable.

• Applications:

  • Automotive Applications: Dirko HT Red is ideal for sealing valve covers, oil pans, water and oil pumps, differentials, gearboxes, oil sumps, thermostat housings, and control housings. It is also suitable for use in headlights, taillights, and battery housings, where strong adhesion and chemical resistance are required.
  • Industrial Applications: Beyond automotive uses, Dirko HT Red is applicable in a wide range of industrial applications, such as sealing flange joints and other systems exposed to high temperatures and chemicals.

• Processing and Usage:

  • Application Temperature: The sealant can be applied at ambient temperatures between +5°C and +40°C. For optimal adhesion, surfaces should be clean, dry, and free of grease before applying the sealant.
  • Drying Time and Curing: Dirko HT Red forms a skin within 5 to 10 minutes at 23°C and 50% relative humidity. Full curing occurs in approximately 24 hours under normal environmental conditions, with a curing rate of about 4 mm per day.
  • Application Instructions: The sealant should be applied evenly to the surface to be sealed. Parts can be assembled immediately or after the sealant has formed a skin, depending on the specific application requirements.

• Storage and Shelf Life:

  • Optimal Storage Conditions: Dirko HT Red should be stored in a cool, dry environment at temperatures between +5°C and +25°C. In unopened packaging, the product has a shelf life of at least 12 months.
  • Use After Opening: After opening, the tube should be tightly closed to prevent premature curing. The product should be used as soon as possible for best results.

• Packaging Options and Product Codes:

  • 70ml Tube (Product Code: 030.790): This packaging is ideal for smaller repairs and applications. The tube comes with a key and nozzle for precise application.
  • 200ml Compressed Gas Cartridge (Product Code: 030.791): This packaging is suitable for applications requiring a larger amount of product. The gas cartridge ensures easy and even application.
  • 310ml Cartridge (Product Code: 030.792): For industrial applications requiring a large amount of material, this cartridge provides the ideal solution. It is suitable for use with a sealant gun.

Conclusion

Elring Dirko HT Red is a high-quality liquid sealant specifically developed for applications where high temperatures, excellent adhesion, and long-lasting elasticity are essential. With its broad chemical resistance, strong physical properties, and ease of use, Dirko HT Red offers a reliable sealing solution for both automotive and industrial sectors. Whether sealing engines, transmissions, or industrial systems, Dirko HT Red is an essential tool for professionals needing a product that performs under the most severe conditions. With various packaging options, including the 70ml tube, 200ml gas cartridge, and 310ml cartridge, Dirko HT Red is suitable for a wide range of applications, from small repairs to large industrial projects.