Installation instructions:First,Remove the old sealing ring and overpressure plug and clean the seal ring groove and overpressure plug hole.Then install the cleaned seal ring,make sure to install it under the stopper and lock pin, at the inner edge of the cover.And then Install the overpressure plug, push the side of the plug , enter the opening from the bottom of the cover.Finally open and close the lid several times to ensure the ring is fully in place.
After sales: Rest assured to purchase. If you have any questions, please contact us. We will reply to you in a timely manner and help you solve the problem