Breech seal washer to fit Weihrauch and Beeman rifles HW35,  HW35k

Suitable for the following calibres: .22 (5.5mm) .177 (4.5mm) .20 (5.0mm)

A worn or damaged seal can cause loss of power and is an easy part to replace.

Just pull the old one out from the end of the barrel and place the new one in.