At LIDERING we have an extensive range of mechanical seals for all types of pumps: from seals for domestic pumps to seals for process pumps, specific in complex applications in the chemical and petrochemical industry. In addition, we offer a wide range of spare parts compatible with the originals of the main manufacturers of pumps (RMS). Our catalog also includes cartridge seals for more demanding industrial processes, and our extensive range of products is ever-growing in order to adapt to the requirements of our customers.
To select the appropriate mechanical seal, it is necessary to know the operating conditions of the application that is to be sealed: shaft diameter and rotation speed, dimensions of the seal housing, physical characteristics of the fluids to be sealed, and in order to determine chemical compatibility; existence of abrasive suspended solids or permitted lubrication and the working temperature and pressure.
Industrial sectors are all subject to increasingly strict regulations. It is very important to prevent the contamination of the processed products and ensure the safety of both the working staff and the equipment in all facilities. To that end, all used materials comply with the different sector-based regulations.
Cartridge seals have been designed to prevent errors in installation, reduce stopping times, prevent damage to other pump elements and reduce energy consumption. All our cartridge seals have been tested and can be installed easily and quickly. They require no maintenance or re-tightening.
Mechanical component seals, formed by a rotary contact surface, a fixed contact surface, secondary seals and springs. Depending on their hydraulic compensation, they may be balanced or non-balanced. Based on their construction, they are divided into: mechanical conical spring seals, mechanical bellow seals (elastomer bellow seals, metal bellow seals or PTFE bellow seals), mechanical multi spring seals and mechanical wave spring seals.
We have an extensive range of designs, which depend on specific working conditions.
Mechanical seals for domestic pumps are mechanical component seals with a simple, economical and versatile design for applications with a low degree of complexity. Mechanical seals for domestic pumps have a single spring or rubber bellow, non-balanced design. We have a wide range of designs and elastomer materials for secondary seals.
The RMS mechanical seals range is compatible with the spare parts of the most popular industrial pump brands, such as Flygt®, Grundfos-Sarlin®, ABS®, Alfa Laval®, Hilge®, APV®, Fristam®, etc.
We also supply kits that contain mechanical seals and other replacement elements, like gaskets, O-rings, etc.
Auxiliary mechanical seals consist of a set of elements which assist in ensuring the proper functioning of mechanical seals and other customer equipment. These include cyclone seals which prevent particles, or other waste that could damage the mechanical seal, from entering the system, tanks that create barrier or quench fluids with instruments that permit automatic level control, checking of circuit pressure and temperature, and manual pumps for placing in the tank.
Seals for static and dynamic applications, and elements for the correct lubrication of machinery:
Braided packing: to seal alternative or helical movements. The operating principle is achieved through the interference obtained by external tightening.
Rotary joints: to facilitate the passage of the fluid between a rotary and another fixed element.
Mechanical face seals: used to seal rotary applications, in extremely difficult working conditions in which high abrasion resistance is needed.
Our over 45 years’ experience in the market positions us as experts in solutions for the pumping and fluid transfer industry. Our active presence and knowledge of processes and applications in critical sectors such as the chemical, pharmaceutical, food, energy, petrochemical and waste processing industries allows us to offer our customers reliable, high quality products.
We apply our experience and technology to repairing and commissioning mechanical seals for pumping and stirring equipment, compressors or propulsion systems for the naval industry, implementing improvements that lengthen the life of the equipment and improve its reliability and performance.
At our production centre in Reus (Tarragona) we are able to manufacture any type of mechanical seal, including standard market solutions and special custom-engineered seals for our customers.
Thanks to the capacity of our facilities and our technical staff, we can provide the following services:
Our Engineering Department has the means and capacity to provide solutions to sealing problems in pumping and stirring equipment, no matter how complex the application or the working environment. We offer you:
LIDERING helps build infrastructures and facilities that are more robust and reliable. We bring safety to industrial processes and are present in companies and sectors that make our lives easier and safer.
Furthermore, through our products we cooperate in protecting and caring for the environment. In this regard, LIDERING has a wide range of mechanical seals, cartridge seals and auxiliary products for the most complex industrial processes.
We currently operate in different sectors like food and beverages, pharmaceutical, chemical, water treatment, maritime, petrochemical, renewable energies, pump and agitator manufacturers and industrial maintenance.
The food sector has extremely strict regulations regarding the safety of its processes. It is important to use products made of materials that are chemically resistant (CIP or SIP processes) and which also comply with the different food sector regulations: FDA, CE 1935, NSF, etc.
This sector requires automated, reliable processes to guarantee a standard product that has not been altered during any of the production phases. Using elements that ensure perfect sealing during all the manufacturing phase steps is of vital importance. The most appropriate mechanical seal design is a hygienic one, since it reduces the possibility of product remains being deposited and not eliminated during CIP/SIP processes, which could give rise to sources of contamination.
During the different treatments to which water is subjected, 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 water), manganese (sewage water), nitrates (water contaminated by fertilisers), etc.
A wide range of mechanical seal designs exist for this type of marine pumps, which operate in especially difficult conditions with high salt concentrations (this parameter varies, depending on the sea), at high pressures, etc.
Within this scope, not only is it important to locate spare parts to make the repair, but it is also essential to select the right materials for the contact surfaces and metal parts of the seal. It is vital to determine a structure that permits easy mounting, increases the pump’s useful life and reduces maintenance costs.
In oil and gas plants, pumps, agitators and compressors are required to transport gases and liquids in a reliable manner. For this reason, mechanical seals that can withstand the extremely severe working conditions, high pressure and speed, are necessary. These must also have high durability, to prevent stoppages caused by unforeseen repairs.
To make paper, cellulose fibres are mixed with water, which gives rise to paste-like mixtures and products. This is why special assemblies are recommended: