bock machining gmbh

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  • PRODUCTS
    • Shaft seal
      • Solid Radial Shaft Seals with Single or Multiple Sealing Lips
      • Radial Shaft Seal with Stainless Steel Housing
      • Radial Shaft Seal Elements with Flushing or Leakage Port
      • Radial Shaft Seal Elements with Pressure-Relieved Sealing Lips
      • Shaft Seal made of UHMW-PE
      • Shaft Seal, porous
      • Radial Shaft Seal with Shaft Sleeve
    • BELLOWS
      • PFAS-Free Bellows Made of UHMW-PE
      • Replacement for Bellows Made of PTFE Compounds
      • Bellows with Metal Insert
      • Rubber belows
    • DIAPHRAGMS
      • Machined Diaphragm
      • Die-Cut Diaphragm Made of UHMW-PE
      • Molded Diaphragms
      • Stamped Diaphragm
    • Plastic Lines
    • PISTON AND ROD SEALS
      • Spring-Energized U-Cup Seal
      • O-Ring-Energized U-Cup Seal
      • Memory Seals
      • Dry-Running Wiper Seals
      • Piston Ring
      • Complete Piston Assembly
    • SPECIAL SEALS FOR PAINTING TECHNOLOGY
      • Needle seal
      • Hose Pig
      • Control Piston
      • Needle Caps
      • Gate Valve Seals
    • VALVE SEAT, VALVE PLUG
    • PLAIN BEARINGS AND GUIDE ELEMENTS
      • Plain bearings and guide elements made from high-performance plastic.
      • Plain Bearing with Integrated Seal
      • Shift Gates
      • Trapezoidal Lead Screw Nuts
      • Plastic Coating
    • PLASTIC TURNED AND MILLED PARTS
    • ASSEMBLIES
      • Kolbenstangen-Führung
      • Gas Control Valve
      • Wiper Assembly
    • METALLIC SOFT SEAL
  • MATERIALS
    • Organor® – PFAS-Free High-Performance Plastics
      • UHMW-PE Ultra-High-Molecular-Weight Polyethylene
    • Enduflon® – Fluoropolymers
      • Enduflon V: PTFE – Polytetrafluorethylene
      • Enduflon M: Modified types of PTFE
      • Enduflon C: Compounds (mixtures) containing PTFE
      • Enduflon E: Paste-extruded PTFE grades
      • Enduflon T: Thermoplastic fluoropolymers
    • Naturon® – Bio-based Plastics
    • Oecomach® – Recycling of Plastic Waste Chips
    • Important Engineering Plastics and High-Performance Plastics
      • PE – Polyethylene
      • PEEK – Polyetheretherketone
      • PEI – Polyetherimide
      • PET – Polyethylene terephthalat
      • PPS – Polyphenylensulfide
      • PSU – Polysulfone
      • UHMW-PE Ultra-High-Molecular-Weight Polyethylene
    • MOCA Declaration of Conformity
  • INDUSTRIES
    • Food Industry
    • Beverage Industry
    • Painting and Adhesive Technology
    • Medical Technology and Pharmaceuticals
    • Rotary Joints
    • Pumps and Compressors
    • Valves and Fittings
    • Laboratory Technology and Analytics
    • Bulk Material Handling
  • SERVICES
    • Development and Design of Seals
    • Design and operation of test rigs
    • Failure analysis of seals
    • Conversion to PFAS-Free Seals

    • CNC manufacturing of plastic components according to drawing
  • BLOG
    • Permeation of UHMW-PE: Requirements in the Beverage Filling Industry
    • PFAS – the next Asbestos?
    • 3M’s Exit from PFAS
    • Hydrogen seals
    • PFAS: The restrictions could go even further.
    • “Elastic” Bellows and Diaphragms Made of PTFE
    • Plastic plain bearings with minimal play?
    • What can a product line made of pure PTFE do?
    • Does a scraper really remove “everything”?
  • WEBINARS
    • Live Recording » Webinar 1: The Use of PTFE in Specialized Sealing Technology
    • Live Recording » Webinar 2: UHMW-PE—The Underestimated Material
    • Live Recording » Webinar 3: Design of PTFE Bellows
    • Live Recording » Webinar 4: How to Design Membranes Made of PTFE and UHMW-PE?
    • Live Recording » Webinar 5: The Mantle Ring – “The Sealing of Horror”
    • Live Recording » Webinar 6: Sealing Hydrogen. How Does It Work?
    • Recording of Webinar 7 » PFAS-Free Alternative Materials to PTFE
    • Live Recording » Webinar 8: PFAS—What Action Is Needed in Sealing Technology?
    • Live Recording » Webinar 9: Design of Bellows and Diaphragms Made from UHMW-PE, a PFAS-Free Alternative Material
  • PFAS
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    • FINAL THESES
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REQUESTHERE

Through intensive research in the field of sustainable materials, we hope to do our small part to continue enabling sophisticated technical solutions without the use of fluoropolymers and, consequently, without the concerning release of volatile PFAS.

Materials, Materials Development & Sustainability

  • 0
Stefan Bock
Monday, 13 July 2026 / Published in Material Development
Alternating Bending Strength Test Stand
For technical reasons, we primarily use plastics for our sealing elements and plain bearings, which are machined exclusively by cutting. Because of this manufacturing process, which is not tied to a specific production line, prototypes can be produced very quickly and cost-effectively; they are immediately ready for series production and can be adapted to changing

Important Engineering Plastics and High-Performance Plastics

  • 0
Stefan Bock
Monday, 13 July 2026 / Published in Material Development
Selection of Plastics
PFAS are per- and polyfluoroalkyl substances, which include fluoropolymers such as PTFE. The decades-long, uncontrolled use of fluorinated compounds has raised significant social and political concerns. The global environmental impacts, including those caused by the careless release of fluorinated surfactants, cannot yet be fully assessed. Everyone who has used PFAS to date should take responsibility
PFAS

Organor® – PFAS-Free High-Performance Plastics

  • 0
Stefan Bock
Monday, 13 July 2026 / Published in Material Development
Laboratory table with various plastic pellets, a white plastic blank rod, and a digital scale
New Approaches to Sealing and Plain Bearing Technology Prompted early on by the discussion surrounding PFAS (per- and polyfluoroalkyl substances), we began researching alternatives to PTFE and similar materials years ago. The basis for this is UHMW-PE, which is modified, compounded, or further refined using chemical and physical methods depending on the specific application. The

Naturon® – Bio-based Plastics

  • 0
Stefan Bock
Monday, 13 July 2026 / Published in Material Development
Bio-based plastics
Materials Research with an Eye Toward the Future As a forward-looking company, bock machining gmbh makes targeted investments in research on bio-based plastics. The goal is to develop sustainable alternatives to conventional materials such as POM, PET, or PA without compromising on mechanical properties or cost-effectiveness. In close collaboration with research partners, we analyze new

Enduflon® – Fluoropolymers

  • 0
Stefan Bock
Monday, 13 July 2026 / Published in Material Development
Reliable, high-performance plastics for specialty industrial seals The term “fluoropolymers” refers to all plastics whose molecular structure includes fluorine atoms. They are among the most chemically and thermally stable materials and are used in a wide variety of applications. Our materials are designated as follows: Despite the obvious and well-known advantages of fluoropolymers, bock machining

Oecomach® – Recycling of Plastic Waste Chips

  • 0
Stefan Bock
Monday, 13 July 2026 / Published in Material Development
Bachelor's Thesis or Master's Thesis
Sustainable Materials Research In our materials research, we place particular emphasis on sustainability. The machining of high-performance plastics produces a significant amount of high-quality plastic chips, which we do not view as waste but as a valuable resource. Through targeted recycling processes and close collaboration with specialized partners, we are increasingly exploring how these chips

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Alternative Materials Baugruppen Beverage Filling Industry Blog Cables Custom-made bellows Development and design engineering Diaphragm Diffusion Failure analysis of seals Guide elements High-performance plastic Hydrogen Konformitätserklärung Live Material Analyses Materials MOCA Operation of test rigs PE PEEK PEI Permeation PET PFAS Plain bearing Plastics Polyester PPS PSU PTFE Seals Services Shift Gates Technical Plastics the food Thermoplaste U-Cup Seals UHMW-PE WDR Webinars Wiper Seals
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