C-4400 Universal Aramid Fibre Gasket Materia
C-4400 is a high-quality compressed fibre gasket material made of aramid fibres and nitrile rubber (NBR). It provides outstanding resistance to oils, water, and steam, making it the ideal choice for general-purpose sealing applications in pipelines, pumps, and valves.
Description
C-4400 is formulated as a general-purpose, high-quality compressed fibre sheet based on aramid (synthetic) fibres and a nitrile (NBR) binder. The composition provides dimensional stability, consistent material quality and broad chemical resistance suitable for many industrial sealing tasks where extreme chemical or temperature demands are not present.
Key benefits
- Universal, proven grade — suitable for a wide variety of non-severe and medium duty service conditions.
- Excellent resistance to oils, water, steam, refrigerants, fuels and many hydrocarbons.
- Good dimensional stability & consistency — predictable behaviour under flange load and simplified inventory management.
- Easy to fabricate on site — convenient for cutting, replacement and routine maintenance.
Applications & industries
-
Flange gaskets for pipelines, pumps and valves in low-pressure / low-temperature services.
-
Refrigeration systems, general chemical processing, oil & gas auxiliary services and utilities.
Why choose C-4400?
C-4400 when you need a reliable, cost-effective sealing sheet that covers a broad spectrum of common process fluids and maintenance scenarios. Its aramid/NBR construction balances mechanical strength, sealability and serviceability — making it a go-to option for maintenance teams, OEMs and plant engineers who require consistent, easy-to-use gasket material without the need for specialty chemistries.
Typical technical specifications
| Basis composition | Aramid fibre bonded with NBR | Sheet size | 1000 x 1500 mm, 2000 x 1500 mm | |||
| Color | green. | Thickness | 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm | |||
| Industry | ||||||
| General industry/Chemical/Oil&Gas/Energy/Infrastructure/Pulp&Paper/ Marine/Automotive/Food&Beverage/Pharma |
||||||
| TECHNICAL DATA-Typical values for a thickness of 2.0 mm | ||||||
| Compressibility | ASTM F36A | % | 11 |
|---|---|---|---|
| Recovery | ASTM F36A | % | 55 |
| Thermal conductivity | λ | W/mK | 0.42 |
| KLINGER cold/hot compression | thickness decrease at 23℃ | % | 10 |
| KLINGER cold/hot compression | thickness decrease at 300℃ | % | 20 |
| Tightness | DIN 28090-2 | mg/s x m | 0.02 |
| Density | g/cm³ | 1.6 |






