Sealless Technology Unlimited

HERMETIC-Pumpen GmbH is a leading developer and manufacturer of hermetically sealed pumps and pumping technologies. The specialist for canned motor pumps has earned a worldwide reputation for its safe and long-lasting pumps, which can be used for the most extreme applications and conveying hazardous media. HERMETIC pumps are suitable for fluid temperatures ranging from –160 °C up to +480 °C and system pressures up to 120 MPa. With power outputs from 1 kW to 690 kW, HERMETIC offers the largest capacity canned motor pumps on the market.

HERMETIC employs around 440 people at its headquarters in Germany and has subsidiaries in China and the USA. In conjunction with its worldwide service and contract partner network, HERMETIC offers reliable customer service over the entire life cycle of a plant.

We are on company holidays from December 27th until January 5th. We are back for you on Monday, January 8th.

You can reach our 24h technical emergency service at +49 761 5830-401.

Making of – an outstanding piece of pump technology


Press release

HERMETIC canned motor pumps – Safe pump technology for diesel and biodiesel production

The reactor circulation pump pays a decisive role in the catalytic cleaning process in diesel and biodiesel production. The high system pressures and temperatures prevailing in the desulphurisation process demand maximum safety and reliability of the used equipment. The use of catalysts and the fluctuating quality of raw material in biodiesel production present additional challenges. The hermetically sealed design of the HERMETIC pump, extensive measuring and control technology as well as rigorous tests during the test bench acceptance guarantee plant operators a safe pump solution with high availability.

Press Release

Nicolaus Krämer is the new chairman of the VDMA Pumps + Systems 

Frankfurt/Gundelfingen, 11th of May 2023 – Nicolaus Krämer is the new chairman of the VDMA Pumps + Systems trade association. The members voted the Chief Executive and Chief Operating Officer of HERMETIC-Pumpen GmbH into office at the general meeting in Freiburg at the end of April.

Application report

Canned motor pumps for server room cooling

Given the explosive growth in web hosting and cloud computing, data servers are playing an increasingly important role in business and society. The reliability of the servers in the sensitive areas of banks, insurance companies, authorities and large companies is particularly critical. This requires cooling systems of increasing size to dissipate the heat generated in the server rooms. The classic cooling medium air is increasingly being replaced by water and other natural refrigerants such as CO2 or NH3.

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Our portfolio of hermetically pump technologies
Clearly focused on use and application

Are you looking for a challenging position?

Welcome to HERMETIC!

Outside of our job vacancies, we also regularly have opportunities, with a wide range of tasks in the development and production of our cutting-edge technology.

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Learn more about our Products

Important standards and regulations concerning water pumps

Traction converters for the railway industry. Overview of CLC/TS 50537-3.

and Expert Tool

The reliable solution for chemical and petrochemical industries.

All you need to know about 
CO2 as a refrigerant

HERMETIC – in CO2 business 
for over 50 years.

Ammonia – The Natural Refrigerant

All facts.


Zero Axial and Radial Thrust – A Unique Quality Feature for Canned Motor Pumps.

PN 52 refrigerant pump
type CAMh

The solution for CO2 applications in the refrigeration industry.

Hermetically sealed 
submersible pumps

The safe and reliable solution for applications in chemical and petrochemical industries.

Good to know

NEW addresses for delivery and collection at HERMETIC