HBM P3 Série Notice De Montage page 16

Installation
Fig. 6.3 With this seal with sealing washers per DIN 16258, only washers made of
non‐metallic materials should be used. If relevant metallic washers are used,
the surface pressure required for a perfect seal cannot be achieved with the
permissible tightening torque of 30 NVm.
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A02239_05_YI0_02 HBM: public
DIN 16258 sealing washer
P3