For a wide range of applications in sealing technology
Rubber-steel gaskets have amassed a wide range of applications in sealing technology. Wherever the secure sealing of media with an exceptionally low leak rate, as well as low bolt loads at relatively low temperatures is required, rubbersteel gaskets provide the optimal solution.
The steel support ring prevents a blow out of the gasket and increases stability, allowing the rubber-steel gasket to be handled easily, even in difficult fitting conditions.
The rubber sealing material ensures a secure seal is created, even in uneven locations, as it has an excellent ability to adapt to sealing surfaces. In conforming to the maximum allowable installation surface pressure, rubber-steel gaskets fulfil the requirements of the TA Luft having regard to clause 3.3.1.4 of the VDI Guidelines 2440.
| Profiles | Cross-section | Description | Gummiqualität | Features | Typical field of application |
|---|---|---|---|---|---|
| WG |  | Main load gasket The rubber-steel gasket Profile WG consists of a steel ring (1.0330) which is surrounded on all sides by rubber. The steel ring is therefore protected from corrosion and media. Vulcanisation guarantees a high level of adhesive strength between the rubber and the steel ring. | FKM NBR EPDM NR | - high level of security against slippage or blow out provided by the steel reinforcement - simple, secure and cost-effective installation due to its stability, compared to non-reinforced rubber gaskets - exceptionally low leakage rate due to the homogeneous rubber casing, making it particularly suitable for pipeline systems carrying media harmful to the environment - low demand on the flange surface due to the soft, flexible sealing surface, seals can even be created with slightly damaged flanges | - Gas and water supply - chemical industries where aggressive and environmentally-harmful media are used - flue gas cleaning systems and power plant cooling circuits - wastewater systems - pipeline construction with vacuum- operated pipelines - pipeline systems with all-rubber flange sealing surfaces - with enamel pipelines and apparatus flanges |
| WG2 |  | Main load gasket | - Leak-proof even at the lowest tightening torques, making the rubber-steel gasket Profile WG2 particularly suitable for plastic flange connections where no high forces can be exerted. - Highly leak-proof due to the self-sealing effect of the sealing lips under internal pressure; the internal pressure forces the sealing lips apart and contributes to the creation of the seal - There is no pressing or flowing of the flexible sealing lips towards the rubber-steel gaskets when used in solid profile, as occurs with O- or V-rings. - Optimum smoothing of flange unevennesses by the flexible sealing lips, particularly when an all-over sealing cannot always be guaranteed, as with GRP flanges. | - Plastic and GRP flange connections - Sealing of vacuum-operated pipeline systems in the chemical industry - Gas and drinking water supply - Sealings of highly-flexible flanges | |
| WG2P |  | - Leak-proof even at the lowest tightening torques, making the rubber-steel gasket Profile WG2 particularly suitable for plastic flange connections where no high forces can be exerted. - Highly leak-proof due to the self-sealing effect of the sealing lips under internal pressure; the internal pressure forces the sealing lips apart and contributes to the creation of the seal - There is no pressing or flowing of the flexible sealing lips towards the rubber-steel gaskets when used in solid profile, as occurs with O- or V-rings. - Optimum smoothing of flange unevennesses by the flexible sealing lips, particularly when an all-over sealing cannot always be guaranteed, as with GRP flanges. | - Plastic and GRP flange connections - Sealing of vacuum-operated pipeline systems in the chemical industry - Gas and drinking water supply - Sealings of highly-flexible flanges | ||
| WS |  | Main load gasket The rubber-steel gasket Profile WS consists of a central support ring and a rubber sealing ring with integrally moulded sealing lips. The central support ring is available in galvanised and chromated carbon steel, stainless steel or plastic. | - Easy to replace the rubber sealing rings, meaning the rubber-steel gasket Profile WS can be reused again and again - Safe to use and easy to handle the rubber sealing material, even at large nominal sizes - Special sizes can be produced without incurring additional costs, from an internal diameter of approx. 400 mm. | - Sealing tank flange connections - Sealing special flanges - Sealing cooling and condensate pipelines in power plants | |
| WL |  | Metal-to-metal contact gasket The rubber-steel gasket Profile WL in its standard form consists of a galvanised and chromated metal support ring and a rubber sealing ring with integrally moulded sealing lips. The support ring is also available in stainless steel or plastic. In contrast to traditional gaskets, the rubber sealing ring in the rubber-steel gasket Profile WL is in off load contact. This means that any forces that are too high for the rubber sealing ring are borne by the support ring. Another advantage is that the rubber sealing ring is chambered outwards by the support ring. With the creation of a metal-to-metal seal, very high internal pressures and additional forces from the pipeline system can be permitted. The rubber-steel gasket Profile WL combines all the advantages of a rubber gasket with those of a metal gasket. | NBR EPDM | - impossible to over load the rubber sealing ring seal is secure, even with large fluctuations or surges in pressure - impervious to additional pipelines forces - easy and safe installation, reduces the risk of installation errors caused by applying too high or uneven bolt tightening torques (the most common reason for the failure of a rubber-steel gasket) - simple replacement of the rubber sealing ring, making it reusable - Special sizes can be produced without incurring additional costs, from an internal diameter of approx. 400 mm. - can be used for a range of applications due to the very large range of surface pressure limits | - High pressure lines such as e.g. gas distribution pipelines, gas pressure control systems - Pipeline construction such as e.g. in underground pipelines - flue gas cleaning systems and power plant cooling circuits - Pipeline and apparatus construction with partly-rubber flange sealing surfaces. |
| WL-HT |  | Kraftnebenschlussdichtung - HTB-geprüft - Die Gummi-Stahl-Dichtung Profil WL-HT ist prinzipiell wie die Dichtung Profil WL aufgebaut, jedoch ist der Stützring mit Graphitauflagen versehen. Die Gummidichtlippe ist aus NBR 50219.0 (zugelassen für den Gas- und Trinkwasserbereich) und der Stützring aus verzinktem und chromatierten Metall. Im Normalfall wirkt die Gummidichtlippe als Primärdichtung. Unter hoher thermischer Belastung, zum Beispiel im Brandfall, dichtet der Stützring mit den Graphitauflagen. | -zugelassen und geprüft unter hoher thermischer Belastung (HTB) bei 650°C, 30 Minuten von der DVGW Forschungsstelle Karlsruhe nach DVGW-VP 401 für Flanschverbindungen nach DIN EN 1092-1. -alle Eigenschaften der Gummi-Stahl-Dichtung Profil WL -durch das Austauschen des Gummidichtringes und der Graphitauflage ist die Gummi-Stahl-Dichtung Profil WLHT mehrfach verwendbar. | -Gas-Hausinstallationen mit geflanschten Hauseinführungskombinationen, Druckregler und Gaszähler -Gasstationen -Trinkwasserleitungen mit angeschlossenen Feuerlöschsystemen nach DIN 1988-600. | |
| KNG |  | – Elastomer sealing element in force shunt | - complies with the revised NIN 30690-1 - certification in accordance with DIN EN 102014 3.1 for the support and in accordance with DIN 10204 2.2 for the sealing lip - impossible to over load the rubber sealing ring - impervious to additional pipelines forces - easy and safe installation, reduces the risk of installation errors caused by applying too high or uneven bolt tightening torques (the most common reason for the failure of a rubber-steel gasket) - coating in RAL1003 in conformity with DIN 2403 | -für Auslegungsdrücke DP bis 100 bar (gemäß DIN 30690-1) -höhere DP möglich -Hochdruckleitungen, zum Beispiel Gasfernleitungen, Gasdruckregelanlagen -erdverlegte Rohrleitungen |
