Seal Supply Systems and Components. At www. Important Note: All the technical references are based on extensive tests and our many years of experience. The diversity of possible applications means, that they can serve as guide values only. No guarantee can be given for a specific case unless the exact conditions of application are know to use and confirmed in a special agreement. For particularly critical conditions of operation, e.
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Seal Supply Systems and Components. At www. Important Note: All the technical references are based on extensive tests and our many years of experience. The diversity of possible applications means, that they can serve as guide values only. No guarantee can be given for a specific case unless the exact conditions of application are know to use and confirmed in a special agreement.
For particularly critical conditions of operation, e. It should be noted that the maximum values of each operating parameter cannot be applied at the same time. Subject to change.
Alpha-numerical Product Index listing all the mechanical seals in this catalogue and a. Pump, flume water. Back cover flap Tandem arrangement. Media Seal selection and material recommendation by media. The recommendations in the media tables on pages 7 to 24 are based on the typical case of a seal for a horizontal centrifugal pump.
Other types of machine, installation conditions, modes of operation, designers, manufacturers and operators specifications, local regulations and so on can result in a different choice of mechanical seal. For complex sealing duties it is always advisable for the user to consult with our specialist engineer.
Basic arrangements and alternatives see page 97 liquid-lubricated and page 69 gas-lubricated. The constituents of the media or their proportions in the medium are unknown or are not known exactly. For gases: 20 C below boiling point of the liquefied gas; at the same time, the sealing pressure must be a minimum 3 bar higher than the vapour pressure. For other media: Up to approx. Liquids are sealed by lip seal, gaseous media by.
The requirements of the TA-Luft air quality control directive have to be considered. Alternative is a constant throughflow of buffer medium arrangement An alternative is a constant through flow of quench medium arrangement 09 ; approximately 0. Where a material has several commonly used designations and common names, it is listed in accordance with IUPAC rules with cross-referencing of its other names. Designations are listed in alphabetical order.
In the case of double or tandem mechanical seals, the recommendation applies to the mechanical seal inboard. Column 9: Materials of construction for inboard mechanical seals.
For an explanation of the material codes and their indices, consult the material key inside the back cover of this manual. Column Hazard warnings and reasons for recommending a double mechanical seal or quench. When compiling these seal selections and material recommendations, it was generally assumed that the machine in question is located in a sheltered building frequented occasionally or continually by persons coming into contact with liquid or vapour leakage of medium from all types of sealing points.
As such, considerations of health and environmental protection had a strong bearing on the choice of seal category. If no mention is made to either of the reasons 1 to 5 for recommending a double mechanical seal or a single mechanical seal with quench, it is acceptable to use a single mechanical seal.
The decision in favour of a single mechanical seal must be taken by the user of the machine or the contractor. As he is the only one to know all conditions and regulations relating to the process and to assess the risks.
Labelling of media with a toxic effect for reproduction: R May impair fertility R Possible risk of impaired fertility R Possible risk of harm to the unborn child. Media which may become hot and finally catch fire in contact with air at ambient temperature without any application of energy, or solid media which may readily catch fire after brief contact with a source of ignition and which continue to burn or to be consumed after removal of the source of ignition, or liquid media having a very low flash-point, or media which, in contact with water or damp air, evolve extremely flammable gases in dangerous quantities.
Media which in low quantities cause death or acute or chronic damage to health when inhaled, swallowed or absorbed via the skin. If the working temperature lies below boiling point column 15 or if the sealing pressure lies clearly above the vapour pressure, a single mechanical seal may be used with consideration of the duty details. Liquid media having an extremely low flash-point and a low boiling-point and gaseous media which are flammable in contact with air at ambient temperature and pressure.
Media which in very low quantities cause death or acute or chronic damage to health when inhaled, swallowed or absorbed via the skin. Media which may cause death or acute or chronic damage to health when inhaled, swallowed or absorbed via the skin. Non-corrosive media which, through immediate, prolonged or repeated contact with the skin or mucous membrane, may cause inflammation.
Media which may, on contact with living tissues, destroy them. Carcinogenic: Substances and preparations which, if they are inhaled or ingested or if they penetrate the skin, may induce cancer or increase its incidence. Mutagenic: Substances and preparations which, if they are inhaled or ingested or if they penetrate the skin, may induce heritable genetic defects or increase their incidence. Labelling of media with carcinogenic or mutagenic effect: R Limited evidence of a carcinogenic effect R May cause cancer R May cause heritable genetic damage R May cause cancer by inhalation.
Mechanical seals with no metal parts on product side must therefore be used. Without auxiliary equipment, the proper functioning of a single mechanical seal is at risk from freezing atmospheric moisture. Media which give rise to a highly exothermic reaction in contact with other substances, particularly flammable substances.
Solid, liquid, pasty or gelatinous media which may also react exothermically without atmospheric oxygen thereby quickly evolving gases, and which, under defined test conditions, detonate, quickly deflagrate or upon heating explode when partially confined.
Media which, when they enter the environment, would or could present an immediate or delayed danger for one or more components of the environment. Please notify us of your experiences. No concentration values are given for this substance in the list because it is still impossible to quote any concentration as being safe. With some of these substances, there is even a great risk from absorption through healthy skin.
If the use of such substances is unavoidable for technical reasons, special safety and monitoring measures must be taken. If the pressure to be sealed lies distinctly above the vapour pressure at working temperature, a single mechanical seal with or without quench can be used under certain circumstances.
If column 10 contains no further grounds other than health hazard for choosing a tandem or double mechanical seal, a single mechanical seal can be used, provided other measures rule out all risks to humans. For some mixtures of media, solidification ranges or pour points are quoted. Different reference temperatures are indicated. This is also a pointer to their behaviour in the event of leakage: sinking, rising or self-dissolving. Additional signs: K Column Boiling point Boiling point of the medium in C under normal pressure 1.
Different reference pressures are marked. If the working temperature is close to or above boiling point, the seal selection and material recommendation must be checked. Additional signs: A Additional signs Butyl acetate tert. Code of Materials and legend see inside of back cover. Please observe the note on page1. Ammonia aqu. Ammonium fluorides: Ammonium hydrogen fluoride Neutral ammonium fluoride Ammonium hydrogen carbonate Ammonium hydroxide Ammonia aqu.
C Cable sealing compounds Calcium acetate Calcium bisulfite lye Calcium hydrogen sulfite. Dinonyl phthalate Phthalic acid esters Dioctyl phthalate DOP Phthalic acid esters Dipentene Dipentyl phthalate Phthalic acid esters Diphenyl, diphenyl oxide Heat transfer oils Diphyl Heat transfer oils Distilled water Water Disulfurdecafluoride Sulfur fluorides Disulfur dichloride Sulfur chlorides Disulfur difluoride Sulfur fluorides Divinylbenzene m- , Vinylstyrene Dodecyl benzene Dowtherm Heat transfer oils Drinking water, industrial water Water Dye liquor with bleaching additives Dye liquor without bleaching additives.
Diglycolic acid 2. Hydrofluosilicic acid Fluorosilicic acid Hydrogen Hydrogen chloride anhydrous Hydrogen fluoride gas Hydrogen iodide anhydrous Hydrogen peroxide. Hydrogen phosphide Phosphine Hydrogen sulfide Hydroxymethyl propionitril Acetone cyanohydrin Hypochlorous acid. Linseed oil Linters Liquefied gases acc.
Magnesium bisulfite Magnesium hydrogen sulfite Magnesium chloride Magnesium hydrogen sulfite Magnesium hydroxide. Sodium hydrogen UF Urine. Please contact EagleBurgmann. The M2 mechanical seal range features a spring loaded solid carbon graphite seal face.
They are cost effective for basic applications such as circulating pumps for water and heating systems.
Item Part no. M 32 Item nos and descriptions as for type M3N, but with the seal face carbon shrink-fitted into the seal face carrier Item no. Extremely rugged and reliable, they cover a wide spectrum of applications in water pumps, sewage pumps, submerged pumps, chemical pumps, etc. All material designations according to EN See back cover.
N-series: I3. M 74 Dimensions, item nos and descriptions as for M7N, but with multiple springs Item no. The M7 mechanical seal range is designed for universal application and ideal suited for standardisation. The loosely inserted seal faces are easily exchanged, permitting all combinations of materials and stock rationalisation.
With SuperSinus spring see page Unquoted dimensions as for item no. Dimensions, item nos and descriptions as for type M7N, but with pumping screw. Dependent on direction of rotation! Dimensions, item nos and descriptions as for type M7N, but with drive key. Items nos, description and unspecified dimensions as for M7N.
Double seals in the MD series have the same design-features as the M7 family of single seals easy-to-replace seal faces, etc.
10969260 Burgmann Design Manual 155
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Burgmann Design Manual 15-3