Entry port (silicone), 40 mm clear diameter, gas tight, can be closed by silicon

The picture may be different from the article and can include supply, which is not in the standard scope.

Entry port (silicone), 40 mm clear diameter, gas tight, can be closed by silicone stopper, in special positions at the back (please state location) - technical clarification required
Description value
WEEE obligation: No
Paraffin oven oven UN160pa, 161l, 20-80°C Paraffin oven UN160pa, natural convection, with...