Klingersil® seals
Klingersil® is the brand name for sealing sheets from the manufacturer Klinger. Among them are various materials in standard and high-performance quality. They are particularly suitable for high-pressure applications and for use in the chemical industry. There are both fiber-reinforced and PTFE-based sealing materials under the brand name Klingersil®. The different materials cover a very wide range of applications, each with specific requirements.
We, Rehm Dichtungen Ehlers GmbH, manufacture your individual flat gaskets from the various Klingersil® gasket sheets.
Available Klingersil® qualities at Rehm Dichtungen Ehlers GmbH
With increasing environmental and safety awareness, the demands on the tightness of gaskets are also rising. Depending on the medium and the respective application of the flange or flat gasket, different gasket materials must be selected in order to achieve the desired tightness. We supply various gasket materials from the manufacturer Klinger, which we process into your flat or flange gaskets using our various manufacturing processes - waterjet cutting, plotting and punching. The various Klingersil® materials are available to us in the form of gasket sheets.
The technical data refer to a material thickness of 2.0 millimetres.
Klinger® qualities
Klingersil® C-4300
Klingersil® C-4300 belongs to the universal high-pressure seals which are used in a wide range of applications. The basis of C 4300 is formed by aramid fibres bonded with NBR. In addition, the quality is resistant to hot water, steam, oils, hydrocarbons and a variety of other chemicals. The material is approved according to DIN-DVGW, DIN-DVGW W 270, elastomer guideline, DNV GL as well as SVGW approval. Due to these resistances, this material can be used in a wide range of applications.
The quality has the DIN-DVGW or the DIN-DVGW 270 as well as the elastomer guideline. For more information, please refer to the attached data sheet.
Technical data sheet:
Properties:
| Compressibility [%] | ASTM F 36 J | 14 |
| Pressure creep strength [MPa] at 50 MPa, 16 h / 175 °C |
DIN 52913 | 32 |
| Density [mg/s x m] | DIN 28090-2 | 0,03 |
| Density [g/cm³] | 1,6 | |
| Average dielectric constant [εr] | 7,4 | |
| Thermal conductivity [W/mK] | 0,39 |
Klingersil® C-4400
Klingersil® C-4400 consists of aramid fibres bonded with NBR. For this reason, the sealing material is resistant to oils, water, steam, gases, fuels, alcohols, hydrocarbons, refrigerants and lubricants.
In its pure form, the material is equipped so that the surface has extremely low adhesion. Klingersil C4400 is BAM tested and has DIN-DVGW, DIN-DVGW W 270, DVGW VP 401, elastomer guideline, ÖVGW Reg.Nr. G 1.912, DNV GL, TA-Luft as well as Fire-Safe according to DIN EN ISO 10497.
Klingersil C4400 is mainly used as high-pressure seals in the pneumatic, hydraulic and chemical industries. We are also aware of other areas of application in the field of gas supply and mechanical engineering.
Technical data sheet:
Properties:
| Compressibility [%] | ASTM F 36 J | 11 |
| Pressure creep strength [MPa] at 50 MPa, 16 h / 175 °C |
DIN 52913 | 37 |
| Density [mg/s x m] | DIN 28090-2 | 0,02 |
| Density [g/cm³] | 1,6 | |
| Average dielectric constant [εr] | 9,2 | |
| Thermal conductivity [W/mK] | 0,42 |
Klingersil® C-4409
Klingersil® C-4409 is thermally and mechanically very resilient and suitable for higher pressures. The high-pressure sealing material is based on synthetic fibres, bonded with NBR as well as an expanded metal reinforcement and has resistance to oils, hydrocarbons, water, steam as well as liquid and gaseous chemicals. Due to the reinforcement with the expanded metal, the material is characterised by an improved pressure resistance, which also leads to more safety at high internal pressures.
Technical data sheet:
Properties:
| Compressibility [%] | ASTM F 36 J | 7 |
| Pressure creep strength [MPa] at 50 MPa, 16 h / 175 °C |
DIN 52913 | 35 |
| Density [g/cm³] | 2,0 |
Klingersil® C-4430
Klingersil® C-4430 is characterized by high compressive strength. The basis is the combination of synthetic fibers and NBR. For this reason, the grade is resistant to hot water and steam. Other resistances of the material include resistance to oils, gases, fuels, weak organic and inorganic acids, lubricants and refrigerants. The gasket material is BAM-tested and is certified according to:
- DIN-DVGW
- DIN-DVGW W 270
- DVGW VP 401
- Elastomer Guideline
- WRAS approval
- DNV GL
- TA-Luft
- Fire-Safe according to DIN EN ISO 10497
- Fire-Safe according to ISO 19921
Technical data sheet:
Properties:
| Compressibility [%] | ASTM F 36 J | 9 |
| Pressure creep strength [MPa] at 50 MPa, 16 h / 175 °C |
DIN 52913 | 39 |
| Density [mg/s x m] | DIN 28090-2 | 0,05 |
| Density [g/cm³] | 1,8 | |
| Average dielectric constant [εr] | 6,7 | |
| Thermal conductivity [W/mK] | 0,38 |
Klingersil® C-4500
The material Klingersil® C-4500 is considered a high-performance seal that is used especially in the chemical industry. Due to its base, carbon fibres, special high-temperature resistant additives and NBR, Klingersil C-4500 is particularly suitable for applications with alkaline media and steam at higher temperatures. Furthermore, the sealing material is resistant to oils, gases, fuels, weak organic and inorganic acids, lubricants and refrigerants. In addition, the material C 4500 is certified according to DIN-DVGW, DIN-DVGW W270, elastomer guideline, ÖVGW Reg. No. G2.143, DNV GL TA-Luft, Fire-Safe according to DIN EN ISO 10497 and also BAM tested.
Technical data sheet:
Properties:
| Compressibility [%] | ASTM F 36 J | 11 |
| Pressure creep strength [MPa] at 50 MPa, 16 h / 175 °C |
DIN 52913 | 38 |
| Density [mg/s x m] | DIN 28090-2 | 0,05 |
| Density [g/cm³] | 1,6 | |
| Thermal conductivity [W/mK] | 0,43 |
Klingersil® C-4509
This quality is based on carbon fibres and high-temperature resistant additives, bonded with NBR, and is particularly resilient and suitable for high bolt forces due to the expanded metal reinforcement. For this reason, gaskets made of Klingersil C4509 can be used as special high-pressure gaskets for high thermal and mechanical stresses in many areas of the chemical industry. Classical areas of application are the sealing of alkaline media and vapours.
The material is approved according to DNV GL and Fire-Safe tested.
Technical data sheet:
Properties:
| Compressibility [%] | ASTM F 36 J | 12 |
| Pressure creep strength [MPa] at 50 MPa, 16 h / 175 °C |
DIN 52913 | 39 |
| Density [g/cm³] | 2,0 |
Klingersil® C-8200
Klingersil® C-8200 is a special high-pressure seal that is particularly acid-resistant. The grade consists of glass fibres bonded with acid-resistant elastomers, resulting in the primary property of acid resistance. Furthermore, this has an improved ozone resistance compared to the other Klingersil sealing materials.
This makes the material particularly suitable for use in industry, chemicals, oil and gas supply and energy supply.
Technical data sheet:
Properties:
| Compressibility [%] | ASTM F 36 J | 9 |
| Stability according to KLINGER [%] Thickness reduction at 23° C |
7 | |
| Density [g/cm³] | 1,7 | |
| Average dielectric constant [εr] | 9,4 |
Top-chem 2000
The sealing material Top-Chem 2000 is a high-performance seal for high mechanical requirements based on PTFE (filled with silicon carbide). In addition to its mechanical resistance, the material is also suitable for use with thermal requirements. Due to its excellent resistance to strong acids and alkalis as well as superheated steam, the material can be used in a wide range of applications in the chemical industry and for the transport of chemicals, e.g. in shipbuilding. Particularly noteworthy are the resistance to ageing and the high temperature range.
The material is characterised by a large number of certifications and approvals, such as WRAS approval, TA-Luft approval, FDA conformity or Fire-Safe in accordance with DIN EN ISO 10497. Further information can be found in the attached data sheet.
Technical data sheet:
Properties:
| Compressibility [%] | ASTM F 36 J | 4 |
| Pressure creep strength [MPa] at 50 MPa, 16 h / 175 °C |
DIN 52913 | 28 |
| Density [mg/s x m] | DIN 28090-2 | 0,08 |
| Density [g/cm³] | 2,5 | |
| Average dielectric constant [εr] | 10,6 | |
| Thermal conductivity [W/mK] | 0,60 |
The properties of Klingersil® materials as sealing materials
Klingersil® materials consist of different fibers, such as aramid fibers, synthetic fibers or carbon fibers, bonded with different elastomers, such as NBR (acrylonitrile butadiene). For rough orientation, Klingersil seals consist of approx. 25% elastomers and approx. 30% fibers. The remaining proportion is accounted for by fillers. Elastomers are seen as a formulation component of fiber gaskets primarily because they influence the tightness, temperature resistance, mechanical properties, elasticity as well as media resistance. The fibers of the Klingersil gaskets, in turn, influence the temperature resistance, the media resistance as well as the tensile strength. Active and highly active fillers have a reinforcing effect in terms of tightness, mechanical properties and media resistance.
Some specialty high-pressure seals, such as Klingersil® C-8200, are based on glass fibers bonded with acid-resistant elastomers. One of the highest-performance grades is Top-Chem-2000, a PTFE filled with silicon carbide (SiC).
Klingersil gaskets are characterized by high adaptability and very good sealing properties. They have very good handling properties, so that simple production and assembly of the respective flat gasket is ensured. Another advantage of Klingersil gasket materials is the wide variety of materials, so that the manufacturer can cover a large number of media resistances for a wide range of applications.
A major disadvantage of Klingersil gaskets is embrittlement and loss of bolt force due to settling behavior at high temperatures (>150 °C).
Differentiation of Klingersil® gaskets from other gasket materials
Basically, it can be said that various Klingersil gasket materials exist as alternatives to certain gasket materials from the manufacturer Frenzelit. For Novapress Basic and Novapress Universal, for example, the Klingersil C 4400 gasket material can be regarded as an equivalent substitute. All the materials mentioned are fibrous materials based on aramid fibers bonded with NBR. In addition, the three fiber materials are considered to be versatile high-pressure seals. With regard to existing approvals, both Novapress Basic, Novapress Universal and C 4400 have the elastomer guideline and are consequently suitable for contact with drinking water.
Also comparable to Novapress Universal is Klingersil C 4430, which is based on synthetic fibres and glass fibres and bonded with NBR. There are also overlaps between Novapress Multi II and Novatec Premium XP and the C 4430 and C4500 fibre materials in terms of mechanical, thermal and chemical resistance.
Areas of application for Klingersil® seals
Based on the wide range of materials described, flat gaskets or flange gaskets made of Klingersil can be used in a variety of applications.
Gaskets made of Klingersil® materials are very low-wear and can withstand high pressures. In this respect, they are particularly suitable for use as high-pressure seals, in pneumatics/hydraulics and mechanical engineering. Thanks to their chemical resistance, they can also be used in the chemical industry. The materials are food-grade and can therefore also be found as sealing materials in food processing.
Thanks to the approvals Elastomerleitilinie and W-270, the sealing materials C-4400 and C-4430 are used in drinking water supply. Based on the approvals DVGW DIN 3535-6 and HTB VP401, we are also aware of the use of the two Klingersil materials in (natural) gas supply. In the power generation sector, C4400 is suitable for applications involving cooling water and lubricants.
Finally, Klingersil gaskets are often used as pipeline and equipment flanges and as gaskets for heat exchangers.
We will be happy to answer your questions about whether Klingersil® materials are also suitable for your purposes. Contact our customer service department for comprehensive advice.