Universal soft gasket material for general applications.
Consisting of organic fibers bonded with NBR, this universal gasket material is suitable for general non-severe applications. C-4243 is resistant to oils, water, hydrocarbons and other chemicals at lower pressure and temperatures.
Material of construction
Organic fibers bonded with NBR.
Surfaces
KLINGERSIL gasket materials are generally furnished with surfaces of low adhesion. On request, graphite facings on one or both sides are also available.
Colour
Green
Industries
- General industry
- Chemical
- Oil & Gas
- Energy
- Infrastructure
- Pulp & Paper
- Marine
- Automotive
- Food & Beverage
Tests and approvals
- Directive 2003/11/EG
- Directive 76/769/EWG
- REACH
- RoHS
Standard sheet dimensions
| Sizes | 1000 x 1500 mm, 2000 x 1500 mm |
|---|---|
| Thicknesses | 0.4 mm, 1.0 mm, 1.5 mm, 2.0 mm, 3.0 mm, 4.0 mm, 5.0 mm Subject to stock availability |
| Tolerances | Thickness acc. to DIN 28091-1 Length ±50 mm, Width ±50 mm |
Typical technical data for thickness 1.5 mm
| Compressibility ASTM F 36 J | 12 % | |
|---|---|---|
| Recovery ASTM F 36 J | 50 % | |
| Stress relaxation BS 7531 | 40 MPa,/200°C | 20 MPa |
| Heat loss DIN 52911 | 30 % | |
| KLINGER cold/hot compression | thickness decrease at 23 °C | 15 % |
| 50 MPa | thickness decrease at 300 °C | 20 % |
| Tightness | DIN 3535/6 | <0.1 mg/(s x m) |
| Thickness increase after fluid immersion ASTM F 146 | Oil ASTM No 3: 5h/150°C | 4 % |
| Fuel B: 5h/23°C | 6 % | |
| Density | 1.65 g/cm3 | |
| Weight increase after fluid immersion ASTM F 146 | Oil ASTM No 3: 5h/150°C | 11 % |
| Fuel B: 5h/23°C | 12 % | |
| Classification acc. to BS 7531:2006 | Grade AY |
ASME-Code sealing factors
| for gasket thickness 1.5/2.0 mm | tightness class 0.1 mg / s x m | MPa | y 15 m 2.2 |
|---|
P-T diagram
The area of the P-T diagram
- In area one, the gasket material is normally suitable subject to chemical compatibility.
- In area two, the gasket material may be suitable but a technical evaluation is recommended.
- In area three, do not install the gasket without a technical evaluation.
Chemical resistance chart
Simplified overview of the chemical resistance depending on the most important groups of raw materials:
| A: small or no attack | B: weak to moderate attack | C: strong attack |
| Parafinic hydrocarbon | Motor fuel | Aromates | Chlorinated hydrocarbon fluids | Motor oil | Mineral lubricants | Alcohol | Ketone | Ester | Water | Acid (diluted) | Base (diluted) |
|---|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | C | A | B | A | C | C | A | B | B |
For more information on chemical resistance please contact us
Function and durability
The performance and service life of KLINGER gaskets depend in large measure on proper storage and fitting, factors beyond the manufacturer’s control. KLINGER can, however, vouch for the excellent quality of their products.
With this in mind, please also observe their installation instructions.
With this in mind, please also observe their installation instructions.
Important points to be observed
With heightened awareness of safety and environmental issues, reducing leaks from flanged assemblies has become a major priority for industry. It is therefore important for companies who use gaskets to choose the correct material to suit the application and service conditions and install and maintain it correctly to ensure optimum performance.
Gaskets installed with high seating stresses exhibit a longer service life than gaskets installed with lower compressive gasket stresses.
Gaskets installed with high seating stresses exhibit a longer service life than gaskets installed with lower compressive gasket stresses.
Re-use
For safety and functional reasons never re-use gaskets.
All information is based on years of experience in production and operation of sealing elements. However, in view of the wide variety of possible installation and operating conditions one cannot draw final conclusions in all application cases regarding the behaviour in gasket joint. The data may not, therefore, be used to support any warranty claims. Subject to change without notice.