• Sealing
  • Products
  • Special Sealing Products
  • Stuffing Box Packings

Special Sealing Products 

Special Sealing Products are customized solutions with special geometries or application requirements. As they are always individually designed and produced, you need a sealing solutions expert with excellent material, product and application know-how. Freudenberg Sealing Technologies is the top innovator in the field, providing you with the maximum technical competence in consulting, engineering and manufacturing.

Play by Your Own Rules

Freudenberg Sealing Technologies Stuffing Box Packings for Pumps and Armatures

Special parameters require special seals. So-called stuffing box packings have been tried-and-tested for extremely high temperatures and chemical resistance in pump and valve applications. They offer an excellent sealing effect while maintaining constant elasticity. Stuffing box packings are firmly pressed into the installation space and remain elastic even with steady changes in temperature and pressure. Freudenberg Sealing Technologies packings have been proven to be flexible in other ways as well. For rapid repairs, rings can simply be cut from the roll and mounted. A long service life, high extrusion stability and dry-run capabilities round out the profile of these seals.

The ideal stuffing box packing for every kind of static or dynamic application – that is the goal of Freudenberg Sealing Technologies product developers. To meet this requirement, the company’s standard portfolio already includes a wide variety of different materials and designs.

Special Stuffing Box Packings for the Process Industry

Stuffing box packings are found in many applications in the chemical industry. In these cases, they are especially well suited for use in solvents and concentrated acids and alkaline media, or at very high temperatures. This special product line, including the PTFE-impregnated packing nonwoven Valtec, leaves nothing to be desired, even when it comes to FDA approvals for the food industry.

Our Products in Detail

FST Stopfbuchspackungen Stuffing Box Packings Alchem

Merkel Alchem 6375

Universal valve packing for use in the chemical industry.

FST Stopfbuchspackungen Stuffing Box Packings Arochem

Merkel Arochem S 6216

Special pump packing; especially suited to abrasive media and high shaft speeds.

FST Stopfbuchspackungen Stuffing Box Packings Arolan

Merkel Arolan II 6215

Universal pump packing; especially suited to abrasive media and shaft runout.

FST Stopfbuchspackungen Stuffing Box Packings Arostat

Merkel Arostat 6204

Wear-resistant universal packing for valves and static applications.

FST Stopfbuchspackungen Stuffing Box Packings Carbosteam

Merkel Carbosteam 6550 A

Valve packing for high temperatures.

FST Stopfbuchspackungen Stuffing Box Packings G-Spezial

Merkel G-Spezial 6560

Universal repair packing for high-temperature steam valves.

FST Stopfbuchspackungen Stuffing Box Packings G-Spezial

Merkel G-Spezial S 6565

High-performance service packing for pumps and valve.

FST Stopfbuchspackungen Stuffing Box Packings Grafiflex6501

Merkel Grafiflex 6501

Packing rings for high-temperature valves.

FST Produktvariante

Merkel Grafiflex Deckeldichtung

Packing rings for high-pressure application.

FST Stopfbuchspackungen Stuffing Box Packings Kombilon

Merkel Kombilon 6742

Ideal for pumps and mixers in the paper and chemical industry.

FST Stopfbuchspackungen Stuffing Box Packings Ramilon

Merkel Ramilon 4586

Packing with a very good price-value ratio – ideal for water pump applications.

FST Stopfbuchspackungen Stuffing Box Packings Unichem

Merkel Unichem 6313

Universal pump packing for applications in the chemical industry.

FST Stopfbuchspackungen Stuffing Box Packings Uniflex

Merkel Uniflex 6588

The ideal packing for all pump applications.

FST Stopfbuchspackungen Stuffing Box Packings Unistat

Merkel Unistat 6303

Ideal for regulating valves and plunger pumps.

FST Stopfbuchspackungen Stuffing Box Packings Unival

Merkel Unival 6323

Universal pump packing; specially suited to high shaft speeds and high temperatures.

FST Stopfbuchspackungen Stuffing Box Packings Univerdit

Merkel Univerdit 7000

Special high-density pump and valve packing.

Get in Touch!

Do you have a question? Would you like an expert consultation on the sealing solution that best meets your requirements? Would you like a concrete offer? We look forward to meeting you.


*mandatory fields

Sorry, an error occured while processing your request.

Please try again.

Join Us!

Experience Freudenberg Sealing Technologies, its products and service offerings in text and videos, network with colleagues and stakeholders, and make valuable business contacts.

Connect on LinkedIn!