Mechanical seals catalogue - general information
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Lidering Safe Industry Empreprise Secteurs Auxiliary Products LC LHP LQT LS LST Spring Seals Stationary Parts Special Designs RMS Seals Repair workshop,Quality control, checking and testing Certifications General Information Chemical Resistance Chart Compatibility Chart Related Products Consult our cartridges catalog Identification Guide Mechanical Seals Notes Axial Spring Seals: Conical FH / FHC FN / LS15 and FN.NU / LS15DIN LS18 / LS19 LS18B LS60IN / LS60IL RN / LS60 and RN.NU / LS60DIN RNB / LS60B and RN.NB / LS60BDIN Axial Spring Seals: Cylindrical I Slim LS40C

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We are close to you... As time goes by, we feel extremely satisfied and proud to be able to contribute to and form part of a responsible, safe industry which is striving to build a better world and a safer future. We are convinced we can offer you a solution that will meet your expectations. Lidering was established in 1975 and specialises in designing, manufacturing, repairing and selling mechanical seals. We provide effective solutions worldwide. Our aim is to be recognised in the market for our accessibility and adaptability to the needs of our customers and the availability and...

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We believe in: Corporate commitment. Teamwork. Learning and ongoing improvement. Change management. A customer oriented approach. A success oriented approach. Ethical behaviour in relation to the environment. We are part of the businesses and sectors that make our lives safer and simpler. Our products help protect and take care of the environment.

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Sectors Food and pharma The food and pharma sectors are especially demanding with respect to safety in their processes. It is very important to prevent contamination with the manufactured products and the halting of production lines during the entire work flow. For this reason, the use of CIP (Cleaning in place) or SIP (Sterilisation in place) processes is quite usual. The complex chemical mixtures (alkaline solutions) used in CIP processes may damage the seals of the mechanical seals in a short time, and in SIP, high temperatures reaching values of up to 150º C can destroy conventional...

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In the chemical industry, the habitual processes require sealing elements for materials with high chemical resistance. For transferring very aggressive or corrosive chemical fluids that are clean or with particles and have high viscosities, along with high temperatures and pressures, the mechanical seal materials and the type of assembly must be correctly defined: single, double, external or in accordance with API plans. Furthermore, the applications require sealing systems that guarantee safety, preventing the leakage of corrosive or flammable products that could enter the atmosphere. In...

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Sector Water treatment In water treatment operations, different processes are carried out in order to obtain a product that complies with the stringent health and legal legislation of each country. Even though water is the main element of the whole process and the main fluid used, the difficulties posed in sealing it are just as challenging as in other sectors. During the different treatments to which water is subject, the mechanical seals may come into contact with sediments, organic matter, dissolved substances such as calcium and magnesium (hard water), sulphate and carbon dioxide (acid...

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Sector Maritime Pumps installed on ships must be extremely reliable and durable. Use of different machines: cooling pumps, fire fighting pumps or boiler supply pumps, meaning that the types of mechanical seals used in this industry are quite diverse. The main applications are for: • Cooling machinery • Firefighting systems. • Feeding boilers. • Pumping ballast water. A wide range of mechanical seal designs exist for this type of pumps, which operates in especially difficult conditions with high salt concentrations (this parameter varies, depending on the sea), at high pressures, etc. Within...

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STATIONARY PARTS Without anti-rotation pin and housing dimensions EN 12756 PF. L DIN (*) PF. L606 PF. L DIN PF. L6 *(Only supplied in carbon). SAFE INDUSTRY

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With O-Ring PF. L13 PF.L (*) *(Only supplied in carbon). PF.L ‘(Locking ring not included)

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STATIONARY PARTS SAFE INDUSTRY

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SPECIAL DESIGNS It is not always possible to use a conventional mechanical seal. Complex applications with special requirements and pumps with small housings need mechanical seals with non-standard profiles. Our engineering centre designs and manufactures customised solutions adapted to the specific needs of our customers, in large or small production runs.

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The RMS seal range is compatible with the most popular pump brands: Flygt®, Grundfos-Sarlin®, ABS®, Alfal Laval®, Hilge®, APV®, Fristam®, etc. These mechanical seals have special designs for wastewater pumps, heating, food products, pharmaceuticals and many applications in all kinds of industrial sectors. In most cases, when a pump is repaired, the mechanical seal is not the only element that is replaced. The renewal of other parts is also recommended, such as O-rings or joints with special profiles, bearings, pins, flat gaskets, etc. We offer kits containing these elements which are...

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Alfa Laval® Contherm® TYPE Amstrong® TYPE TYPE TYPE TYPE Hidering SAFE INDUSTRY

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Fristam® SECTORS Hidering SAFE INDUSTRY

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Hidering SAFE INDUSTRY

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RMS SEALS TYPE TYPE TYPE TYPE TYPE TYPE Mouvex® Nikuni Pumps® Pedrollo® fflJE TYPE TYPE

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TYPE Suntec® Hidering SAFE INDUSTRY

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REPAIR WORKSHOP, QUALITY CONTROL Repair workshop Lidering’s modern, adequate equipment enables it to execute repair and transformation operations on mechanical seals and cartridges. The process commences by diagnosing the condition of the part, and after this, we execute the necessary processes for cleaning, polishing and lapping the contact surfaces, grinding parts and replacing components, etc. After carrying out these operations, the sealing of the repaired parts is checked by pressure test, to ensure that the part is ready for operation in any application that requires sealing of the...

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