This seminar introduces the most important test procedures for incoming goods and qualification tests. In addition, there will be an opportunity to get to know the application of the test procedures in an accredited test laboratory.

O-Ring Prüflabor Richter GmbH
Kleinbottwarer Str. 1, 71723 Großbottwar
Tel: 07148 166 020 | Fax: 07148 166 02 299
E-Mail: info(at)o-ring-prueflabor.de




The O-Ring Prüflabor Richter specializes in services designed to ensure a safe use of elastomer seals and technical moldings and has been accredited according to DIN EN ISO/IEC 17025 since 2002. In addition to numerous services, we also offer the performance of failure analyses, which we have carried out on more than 2000 cases to date.

Our gained experience is shared in seminars, in-house seminars and consultations. Since the laboratory was founded in 1996, more than 2000 companies have already taken advantage of these services.


After he graduated with a degree in mechanical engineering from the University of Stuttgart, Bernhard Richter was employed by one of the world’s leading sealing manufacturers for more than ten years, seven of which were spent as Head of Applications Engineering of the European O-Ring Division. Soon after, he founded the O-Ring Prüflabor Richter in 1996 and has since passed on his knowledge in seminars throughout the year.

His ability to comprehensively understand complex correlations is particularly appreciated. Furthermore, he is not afraid to provide the user with clear decision criteria. He has been an expert in the ISO Working Group on O-Ring Standardization (ISO 3601) for more than ten years and is well known for his numerous publications.


We also offer individual designed seminars in English according to the needs of our customers.
For more information feel free to contact us at info(at)o-ring-prueflabor.de

Seminar program

Day 1

Introduction 9.30 - 9.45
Comparison of sealing materials(B.Richter)
  • Test criteria for sealing materials
  • Compound related differences
  • Advantage of finished part testing
9.45 - 11.30
Dimensional and visual inspections(B.Richter)
  • Shape and surface deviations
  • Non-contact measurement methods
  • Measuring mandrels and circumferential measurers
  • Practical exercises
11.30 - 12.30
Lunch Break 12.30 - 14.00
Typical goods receipt tests(B.Richter)
  • Shore A and IRHD hardness
  • Spec. weight
  • Compression set/tensile set
  • Practical exercises
14.00 - 15.30
Coffee Break 15.30 - 15.45
Physical material tests(B.Richter)
  • Tensile test on shoulder bars and finished parts
  • Tear propagation resistance
  • National and international standards
  • Practical exercises
15.45 - 17.00
Discussions 17.00 - 19.00
Exchange of experiences in a casual setting 19.00

Seminar program

Day 2

Resistance tests and artificial aging(B.Richter)
  • Definition of resistance
  • Important influencing factors on reproducibility, presentation of the various test standards
  • Evaluation and interpretation of results
  • Artificial aging
8.30 - 9.30
Coffee Break 9.30 - 9.45
Advanced material testing(B.Richter)
  • Cold test methods (TR10, DSC, DVR, DMA)
  • Ozone test
  • Analytical test methods (TGA, FTIR, pyrolysis GC-MS)
  • Compressive stress relaxation
9.45 - 11.30
Requirements for a test laboratory According to din en iso/iec 17025(G.Reiner)
  • Competence requirements
  • Quality management system
  • Practical experience in implementation
11.30 - 12.15
Lunch Break 12.15 - 13.30
Requirements for an order specification(B.Richter)
  • Definition of compound constancy
  • Interpretation of data sheets
  • Sample proposal for an order specification
13.30 - 15.15
Final Discussion 15.15 - 15.30
End of the seminar approx. 15.30