Is the air tube of your Hatsan Velox leaking?
With this revision kit, you’ll have all the O-rings and seals you need to freshen up the pressure tube of your air rifle!

This set includes not only all the O-rings but also a new valve seat for the internal valve,
so you can be sure everything is in top shape again!

When installing the rings, we recommend lubricating them with silicone grease such as Hill NLGI Grease.
It’s not only good for these O-rings, but also for maintaining the barrel seal, fill probe rings, magazine, and more!