South Eastern Gaskets supplies Compressed Fibre Gasket Material across Australia, with grades selected for your media, temperature and pressure needs.
Compressed fibre gasket material is used where a flat gasket must seal between mating surfaces under defined process conditions. At South Eastern Gaskets, we supply and cut CNAF grades for industrial applications across Australia, with material selection based on the media, temperature, pressure and joint requirements rather than one headline rating.
How Does Compressed Fibre Gasket Material Support Industrial Sealing?
Compressed Fibre Gasket Material, commonly called compressed non-asbestos fibre or CNAF, combines fibres and fillers with an elastomeric binder. Different formulations are designed for different operating environments, so one CNAF sheet should not be treated as interchangeable with another.
Our CNAF range includes general-purpose materials as well as grades intended for refrigerants, steam, aggressive media and higher-temperature or higher-pressure service. That makes specification more important than simply choosing a familiar thickness or sheet type.
Match the CNAF Grade to the Operating Conditions
Before ordering a gasket, identify the actual service conditions. Our material selection tool can help narrow suitable options, but the final choice should reflect the complete application.
Key details include:
- Process media: Specify the fluid or gas, concentration and any cleaning chemicals that may contact the gasket.
- Temperature: Provide normal operating temperature as well as start-up, shutdown and short-term peaks.
- Pressure: Include normal pressure, test conditions and any known surges, pulsation or vacuum service.
- Flange arrangement: Confirm the flange type, facing, dimensions, material and condition.
- Cycling and movement: Repeated heating, cooling or vibration can affect gasket loading over time.
- Required certification: Potable water and other controlled services may require a grade carrying the appropriate product certification.
We list multiple CNAF grades with different binders and published temperature and pressure ratings. These figures are useful screening information, but they should not be read in isolation from chemical compatibility and joint design.
Why Cutting Accuracy and Installation Still Matter
Correct material selection does not compensate for a poorly cut gasket or an incorrectly assembled joint. Our manufacturing capabilities allow us to produce standard and custom gasket profiles from customer dimensions, drawings or PDF files, helping the gasket match the intended sealing faces.
During installation, flange faces should be clean, the gasket should be correctly aligned, and fasteners should be tightened using the specified joint procedure. ASME PCC-1 flange assembly guidance addresses gasket selection, joint preparation, bolt loading and tightening practices for pressure-boundary bolted flange joints.
A few practical checks can reduce avoidable problems:
- Confirm the gasket dimensions and bolt-hole pattern before assembly.
- Inspect flange faces for damage, corrosion or debris that could interfere with sealing.
- Keep the gasket centred so it does not project into the bore unless the design specifically requires it.
- Follow the approved tightening sequence and torque or bolt-load requirements for the joint.
- Do not assume a thicker gasket will improve sealing. Thickness should suit the flange condition and application.
Compressed Fibre Gasket Material Cut to Your Requirements
The most suitable Compressed Fibre Gasket Material is the grade that matches the process media, operating conditions and flange arrangement. South Eastern Gaskets supplies CNAF options for varied industrial applications and can cut standard or custom profiles to suit customer requirements.
If you are unsure which grade or dimensions to specify, send us the media, temperature, pressure, thickness, dimensions and quantity required. Request a tailored gasket quote and our team can help assess the available material options for your application.