C-4243 General Purpose Aramid Fiber Gasket Material
C-4243 is a universal non-asbestos compressed-fibre gasket sheet made from synthetic/aramid fibres bonded with NBR, designed for dependable flange sealing of liquids and gases in non-severe service conditions.
Description
C-4243 is a general-purpose compressed fibre jointing sheet based on organic/aramid fibres bound with nitrile (NBR). It is formulated to provide dependable sealing performance for liquids and gases at lower pressures and temperatures, with good resistance to water, oils and many hydrocarbons. The material is easy to cut and fit, making it a practical choice for maintenance and routine engineering applications.
Key benefits
- Universal, cost-effective grade for a wide range of non-severe industrial sealing tasks.
- Good resistance to water, oils and hydrocarbons, suitable for common process fluids at lower P/T.
- Aramid/organic fibre + NBR construction gives balanced mechanical strength, sealability and handling.
- Easy fabrication and on-site cutting — convenient for repairs and spare-part reduction.
Applications & industries
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Flange gaskets for pipelines, pumps and valves in low-pressure / low-temperature services.
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General maintenance and plant engineering where a reliable, economical non-asbestos sheet is required.
Why choose C-4243?
Choose C-4243 when you need a proven, economical sealing material that balances performance and cost for routine industrial services. Its aramid/NBR construction gives dependable sealing for water, oils and many hydrocarbons while being simple to cut and install — ideal for maintenance teams and OEM stocking where extreme chemical or high-temperature resistance is not required.
Typical technical specifications
| Basis composition | organic / aramid fibres bonded with NBR. | Sheet size | 4000 x 1500 mm, 2000 x 1500 mm | |||
| Color | green. | Thickness | 0.4 mm – 6.4 mm (typical). | |||
| Industry | ||||||
| General industry/Chemical/Oil&Gas/Energy/Infrastructure/Pulp&Paper/ Marine/Automotive/Food&Beverage/Pharma |
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| TECHNICAL DATA-Typical values for a thickness of 2.0 mm | ||||||
| Compressibility | ASTM F36A | % | 12 |
|---|---|---|---|
| Recovery | ASTM F36A | % | 50 |
| Creep relaxation / Stress relaxation (DIN 52911) | 30 | ||
| KLINGER hot compression | thickness decrease at 23℃ | % | 15 |
| KLINGER hot compression | thickness decrease at 300℃ | % | 20 |
| Tightness | DIN 3535/4 | ml/min | 1.0 |
| Density | g/cm³ | 1.65 |






