TM series single mechanical seals are designed for sealing the shafts of centrifugal pumps, handling crude oil, oil products, oils, organic solvents, water and water condensate, as well as aqueous solutions of acids, alkalis and other liquids (product), that do not have a corrosive effect on the seal parts.
Mechanical seals are used with serviceability support systems VT-45K and HCS-35K.
Single mechanical seals may be applied instead of the following seal makes: ОНТ, УТ, ОНК, ОП and БО.
TM series seals are designed for sealing the shafts of the pumps, handling crude oil, oil products, oils, aqueous solutions of acids / alkalis, water and water condensate, as well as other liquids, the leakage of which into the atmosphere is acceptable according to safety requirements.
TMH series seals, which are characterized by a thermal barrier (cooler) on the shaft, are designed for the pumps, handling liquids with a temperature over 200 °C.
TMP series seals, which are characterized by an auxiliary seal (floating throttle ring) on the atmosphere side, are intended for the pumps handling crude oil, as well as aqueous solutions of substances, which under the contact with air are crystallized, polymerized and form sediments.
TMD series seals, which are characterized by an auxiliary seal (floating throttle ring) on the side of the sealed product, are designed for the pumps, handling liquids that allow dilution with water or other barrier liquids (oil, diesel fuel, etc.).
Specific design features of the seals:
construction simplicity and reliability;
long service life in comparison with the similar ones;
cartridge type seals are easy in installation and dismantling;
the springs are removed from the sealed product;
the friction pair is hydraulically unloaded;
the auxiliary seal is a self-adjusting throttle ring;
the most parts of single, dual and tandem seals are interchangeable with each other;
prior to shipment all mechanical seals are subjected to bed tests;
the seals are applied in the piping plans 01, 02, 11, 12, 13, 14, 21, 22, 31, 32 and 41 according to API 682.
Mechanical seals for the pump shafts
Single type seals may be applied in the following pumps:
НКВ, НК and НПС series centrifugal pumps with overhung impeller;
НМ series main pipeline pumps;
НГПН series booster pumps;
НОУ series pumps, designed for pumping out the leakages;
ПЭ, ПТ and ПД series feed water pumps;
Кс and КсВ series condensate extraction pumps;
СЭ series district heating pumps;
ЦН series circulating pumps;
НКУ series pumps for waste-heat boilers;
pumps, made by foreign manufacturers Grundfos, KSB, Higle, AlfaLaval, APV, Wilo, Fristam and Ebara.
Overall and mounting dimensions of the single mechanical seals
OVERALL AND MOUNTING DIMENSIONS ARE SPECIFIED FOR THE SEALS, USED IN НК, НКВ, НПС AND OTHER CRUDE-OIL PUMPS. THE SEALS FOR OTHER TYPES OF THE PUMPS MAY HAVE OTHER MOUNTING DIMENSIONS.
Parameters of the seal working area
Температура перекачиваемого продукта, оС
от -30 до 200
Давление продукта в камере уплотнения, МПа
Частота вращения вала насоса, об/мин
silicium carbide, tungsten carbide, silicified graphite and antifriction carbon graphite;
rubber compounds based on fluorine rubber, perfluoro elastomer and ethylene propylene;
stainless steel of grades 20X13, 08Х18Н10Т, 10Х17Н13М2Т and 06ХН28МДТ.
If you have any questions on the selection of the necessary equipment or if you would like to buy a mechanical seal, please, contact us via a contact form.
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