I do not understand the sealing function of the 2600F series?

As a customer you need to order both seals:

• AN6227B6 is the sealing which has to be installed under the spring cup to seal the outer area.
• AN6227B3 under the head of the stud to seal the inner area.

Be wary! The G value changes because thickness is added, please add 0,75mm to the total thickness to compensate for the sealing function of the stud.