Well respected brand of pond equipment from China
Replacement pack of 4 anti-wear teflon washers placed under the discs against the inner & outer faces of the rubber diaphragms.
Dimensions: 40mm outside diameter, 20mm internal diameter
To suit the following pond air pump
SPARE PARTS - click this link for our full range of consumable pump chamber components for the Resun LP-40 pump. Preventative maintenance gives long-term reliability. Part numbers relate to the manual supplied with your pump