Material Expertise

A comparison to the conventional PTFE gasketing production process shows the difference. PTFE – PolyTetraFluoroEthylene – is an unbranched, linear, semi-crystalline polymer of fluorine and carbon. Due to its chemical inertness, PTFE is used as a coating where aggressive chemicals occur in industry. Virgin PTFE has many advantages. Some of them are exceptional chemical resistance, wide temperature range, lowest friction coefficient, low surface energy, non-stick surface properties, no embrittlement of aging and excellent electrical and dielectrical properties. But it also has several disadvantages. It is very soft and has the tendency to cold flow. PTFE is also called “dead” material because, when compressed, it remains in this state. It is also fragile and surfaces must be smooth and hard. GYLON® offers a good possibility to use the advantages of PTFE, but due to its production process to eliminate the typical disadvantages – and even to improve the material. GYLON® is a modified and restructured PTFE.



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GYLON® is being used as lip seal material of PS-SEAL® and significantly responsible for its successful operation. We offer highly diverse seal options and combinations of materials to cope with the very different requirements of many diverse industrial branches.

Experts & Services

The Garlock family of GYLON® products has evolved over the years with a focus on quality to meet and exceed customer expectations. The use of Employee Involvement, Statistical Process Control, Vendor Assurance Programs, and a continuous improvement philosophy continues to guarantee end users the highest quality products available. Testing is performed regularly on all styles and thicknesses to ensure the consistency of Garlock quality in GYLON® sheets. Quality products, years of experience and value-added service programs, all are reasons why the GYLON® family of products has become such a major sealing component in the industry today.

Our experts are application engineers as well as sales engineers. All are highly trained and can discuss and debate the requirements of your applications with you professionally and expertly and advise you on the way to the best fitting sealing solution.


Hygiene Requirements

Hygienic manufacturing of the various products in the food and beverage industry requires special consideration when choosing a sealing solution. In the past, mixing shafts were often sealed with stuffing box packings. This solution is unsuitable from a hygienic point of view. A suitable sealing solution must comply with the hygienc design. A component in hygienic design is designed to be cleanable and excludes microbial and particulate contamination of the end product in a hygiene-critical production environment. Hygienic seals must therefore be designed to be free of dead space.


PS-SEAL® Standard Configurations:

(Please click on the drawing to enlarge)

PS-SEAL® Dimensions:

(Please click on the drawing to enlarge)

Conformity & Certificates

In order to meet the requirements of special applications, we have subjected our materials and our GYLON® to special tests. Detailed records on the tests listed below are available upon request.

The PS-SEAL® lip materials meet many requirements, this is confirmed by all major certificates.


PS-SEAL® Lip Materials:

(Please click on the table to enlarge)

GYLON® Conformity & Certificates:

(Please click on the table to enlarge)

CIP & SIP Cleaning

The media in the production cycle as well as the cleaning cycle must be safely sealed. The cleaning processes are carried out using CIP (Clean-In-Place) as well as SIP (Sterilization-In-Place). The CIP process is a cleaning method in which individual fully automated processes run according to strictly specified parameters. The cleaning temperatures are determined according to the application and are usually around 90°C. The CIP process is followed, as a possible extension, by sterilization using the SIP process. Here, in automated processes, active microorganisms are killed at around 140°C using hot water or steam, depending on the application. The use of chemical disinfectants is also possible during this process.


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How to find us

Garlock GmbH
Falkenweg 1
41468 Neuss


+49 2131 349-0


Garlock Global Website


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