Novus 49 Gaskets

What Are Novus 49 Gaskets?

Novus 49 Gaskets are manufactured from compressed non-asbestos fibre (CNAF) material. They are made with high-strength aramid fibres and nitrile rubber binders to provide a safe, effective sealing alternative to traditional asbestos-based gaskets.

Designed for industrial sealing, Novus 49 performs well in environments where temperature and pressure conditions vary. These gaskets deliver tight seals even on imperfect flanges, helping to prevent leaks and maintain system safety.

5. Strong Compressibility and Recovery

The material adapts to uneven surfaces and flange irregularities, compressing under load and recovering its shape effectively.

6. Dimensional Stability

These gaskets retain their shape over time, resisting creep and relaxation, which improves long-term sealing performance.

7. Easy to Cut and Install

Novus 49 handles well in workshop and site environments, cutting cleanly into various gasket shapes with minimal waste.

8. Certified Grades Available

Many Novus 49 grades are available with industry-recognised approvals, such as WRAS for drinking water and TA-Luft for fugitive emissions.

Common Industrial Materials for Gasket Applications

Material selection depends on application media, temperature, and pressure. While Novus 49 is a versatile solution, here is a breakdown of typical gasket materials and their industry fit:

1. Compressed Non-Asbestos Fibre (CNAF)

Used for water, steam, oils, and gases. Suitable for general manufacturing, marine, HVAC, and power systems.

2. Graphite Gaskets

For high-temperature, high-pressure systems. Common in steelworks, refineries, and power generation.

3. PTFE Gaskets

Highly resistant to aggressive chemicals. Used in chemical processing, pharmaceuticals, and food systems.

4. Rubber Gaskets

NBR, EPDM, and Viton rubbers suit low to medium pressure water, oils, and general plant systems.

5. Metallic and Semi-Metallic Gaskets

Used where temperature and pressure exceed non-metallic limits. Typical in oil and gas, refinery, and offshore environments.

6. Cork and Rubber Composites

Light-duty sealing for engine housings, transformer covers, and automotive components.

Challenges Addressed by Novus 49 Gaskets

Understanding common issues in industrial sealing helps you choose a better solution. Novus 49 addresses a range of typical pain points.

• Incompatibility with Harsh Chemicals
  Although resistant to many fluids, Novus 49 is not intended for aggressive acids or solvents. In those cases, PTFE or graphite is a better choice.
• Limited High-Temperature Tolerance Under Full Load
  While Novus 49 can handle up to 400°C, it performs best at lower temperatures when pressure is at its maximum. For extreme heat, graphite-based gaskets are recommended.
• Potential for Creep Over Time
  As with most compressed fibre materials, some loss of thickness (compression set) may occur under long-term load and heat. Periodic re-tightening may be required.
• Static Applications Only
  Not ideal for rotating or moving joints. Works best in static flanges, covers, or casings.
• Moisture Sensitivity
  Though water-resistant in service, storage in damp or humid conditions may affect performance. Dry storage conditions are recommended.
• Installation Care
  Using the correct thickness is important. Too thick may allow excessive creep, too thin may fail to seal rough surfaces. Our team can advise on the right specification.