In order to guarantee high and reliable product and service quality in the global market for our customers both today and in the future, STENFLEX® puts great emphasis on fully certified quality management. With outstanding results: Approval bodies and independent testing institutes around the world have confirmed the first-rate quality of STENFLEX® products.
A consistently high level
STENFLEX® has all major national and international manufacturer certificates, type approvals and special certificates of competence. Our production processes are based on the ISO 9001:2015 quality management system, which has been in use throughout our organisation for a number of years now.

Management service
Quality seal

Certified for nuclear facilities
Suitability approval for quality assurance Approval according to KTA 1401

Tested according to pressure equipment directive

Tested for DIN 4809
registered number: 3 E002



Type Approvals



Type Approvals














Type Approvals