Additional Information

Additional information

on general topics

ZI-001 Transport

ZI-700 METU and the Norms

ZI-705 CE Marking

ZI-706​​​​​​​ Quality Management


ZI-000 Useful

on the metals used

ZI-101 Metals

on gaskets and sealants

ZI-201 Polyethylene foam gasket (PE), White

ZI-202 Polyethylene foam gasket (PE), dark grey

ZI-203 Polyethylene foam gasket (PE) for MU overcollars, dark grey

ZI-204 Self-adhesive rubber edge molding (SKK) for access doors

ZI-206 Vitreous fibers gasket (GF)

ZI-207 Rockwool gasket (SW)

ZI-208 EPDM gasket, black

ZI-209 EPDM gasket for the insulated access doors IRD-2, -3, -4

ZI-210 Nitrile Butadiene Rubber (NBR)

ZI-211 Silikon-Dichtung (SI)

ZI-401 HD sealant

on round duct connections

ZI-602 AF Circular Flanges and SR Joining Clips Pulling Resistance Tests

ZI-702 Air-tightness of the AF and BF Circular Flanges

ZI-703 Liquid Tightness of the Round Flange Connections

ZI-704 Round flanges equipotential bonding

on access doors

ZI-720 TÜV NORD - Access Doors Air-tightness Tests accroding to the norm DIN EN 12237

ZI-502 Access Door Templates

ZI-503 RRD Opening Dimensions according to the Duct Diameters

ZI-501 Access Door Knobs

on various product components

ZI-302 SI Rubber parts of the SI insulation hangers

Resistances to Chemicals

Chemicals and oils are available in very different qualities. Their properties vary depending on their concentration, operating temperatures, possible mix with other chemicals and the eventual presence of impurities. This is why gasket manufacturers only provide general information about the resistance of their products to various chemicals. It is therefore necessary to ask your suppliers of oils, solvents and other chemicals which materials (galvanized steel, stainless steel, etc.) and which gaskets (PE, EPDM, NBR, Silicone, etc.) they recommend. In view of the above it is also advisable that the client runs some tests in order to assess if the gaskets are suitable for the intended application. If you send us an inquiry or order, we assume that the above points have been clarified.


The present additional information have been compiled carefully. They are only indications intended to provide counsel. They are the result of internal tests and information provided by our suppliers. There is no guarantee for completeness and accuracy. More precise information can only be made available through focused tests on a case by case basis. The provided indications do not discharge the user from conducting his own tests. Please make sure that the product is suitable for the intended use. Changes, errors and omissions excepted. Free translation: the German version prevails.