Elring Dirko HT Grey - High-Temperature Liquid Gasket

Key Features and Specifications of Dirko HT Gray

• Chemical Base and Curing:

  • Oxime-Silicone: Dirko HT Gray is based on an oxime-silicone, which ensures a neutral curing process at room temperature. This prevents the formation of acidic byproducts, making the product safe for use on sensitive metal surfaces without risk of corrosion.
  • Single-Component: The sealant is ready to use and requires no mixing or activation. This makes the product easy to handle without additional tools or preparation.
  • Room Temperature Vulcanized (RTV): Dirko HT Gray cures at room temperature through a reaction with moisture in the air, resulting in a durable, elastic seal that withstands high temperatures and harsh conditions.

• Temperature Resistance:

  • Wide Temperature Range: Dirko HT Gray can be used at temperatures from -60°C to +285°C and can withstand short-term peaks up to +315°C. This makes it ideal for applications with high thermal stress, such as engines, exhaust systems, and other environments with extreme heat.
  • Long-Lasting Elasticity: The sealant retains its elasticity and adhesion even with prolonged exposure to extreme temperatures, ensuring reliable seals in demanding environments.

• Chemical Resistance:

  • Resistant to Various Chemicals: Dirko HT Gray offers high resistance to a wide range of chemicals, including mineral oils, synthetic oils, greases, coolants, UV radiation, salt water, and cleaning agents. This chemical resistance makes the product particularly suitable for use in engines, transmissions, and other systems exposed to aggressive substances.

• Physical Properties:

  • Shore A Hardness: 40 ± 5 according to DIN 53505, making the sealant firm enough to provide reliable sealing while remaining flexible for various applications.
  • Density: 1.18 ± 0.2 g/ml according to DIN 53479, ensuring a strong yet elastic seal.
  • Elastic Modulus: 1.0 ± 0.2 N/mm² according to DIN EN ISO 8339, indicating that the sealant can absorb stresses without cracking, even under high pressure.
  • Elongation at Break: 400 ± 100% according to DIN 53504, showing that Dirko HT Gray can accommodate significant deformation without failure.
  • Tensile Strength: 3.3 ± 0.2 N/mm² according to DIN 53504, indicating strong adhesion and durability of the sealant.

• Media Resistance:

  • Durable Under Stress: Tests show that Dirko HT Gray retains its physical properties even after prolonged exposure to high temperatures and aggressive media like engine oil and water-glycol mixtures. This makes the product particularly suitable for applications requiring constant exposure to challenging conditions.

• Applications:

  • Automotive Applications: Dirko HT Gray 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 seals in headlights, taillights, and battery housings, where waterproofing and chemical resistance are essential.
  • Industrial Applications: Dirko HT Gray can be used in a wide range of industrial applications, such as sealing flange connections and other systems exposed to high temperatures and aggressive chemicals.

• Processing and Use:

  • Application Temperature: The sealant can be applied at ambient temperatures between +5°C and +35°C. For optimal adhesion, surfaces to be sealed must be clean, dry, and free of oil and grease.
  • Drying Time and Curing: Dirko HT Gray forms a skin within 5 to 10 minutes at 23°C and 50% relative humidity. Full curing occurs in about 24 hours under the same environmental conditions, with a curing rate of approximately 4.5 mm per day.
  • Application Instructions: The product should be applied evenly to the surface to be sealed. Parts can be assembled immediately after application or after the sealant has formed a skin, depending on the specific application requirements.

• Storage and Shelf Life:

  • Optimal Storage Conditions: Dirko HT Gray 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: 036.164): This compact packaging is ideal for smaller repairs and applications. The tube comes with a tube key and nozzle for precise application.
  • 200ml Compressed Gas Cartridge (Product Code: 036.166): This packaging is suitable for applications requiring a larger quantity of product. The gas cartridge ensures easy and even application, especially for larger surfaces.
  • 310ml Cartridge (Product Code: 610.023): For industrial applications requiring a large amount of material, this larger cartridge provides the ideal solution. It is designed for use with a sealant gun and is perfect for professionals who regularly perform sealing tasks.

Conclusion

Elring Dirko HT Gray is a versatile and reliable liquid gasket specially designed for applications where high temperatures, chemical resistance, and durability are essential. With its excellent physical and chemical properties, Dirko HT Gray offers a high-quality sealing solution for both automotive and industrial applications. Whether for engines, transmissions, or other mechanical systems, Dirko HT Gray is the ideal choice for professionals needing a product that performs under the toughest conditions. With various packaging options, including the 70ml tube, 200ml gas cartridge, and 310ml cartridge, Dirko HT Gray is suitable for a wide range of applications, from small repairs to large industrial projects.