This O-ring seals the pump chamber to the electrical module on most Hozelock pond pumps since approximately year 1985 to the current models. It slots into the groove around the opening which houses the impeller magnetic rotor. Replacement is required if the original is stretched, cracked or missing to avoid pressure loss.
HOZELOCK Pond Pumps Pre year 2000 Models:
HOZELOCK Pond Pumps Post year 2000 Models:
HOZELOCK Pond Pumps Strainer Caged Models
HOZELOCK EasyClear - All-in-one (pump/filter/UVC): Models (3'n1) 3327, 3027 (4'n1) 3328, 3028, Models 3003, 3113, 3006, 3116, 3009, 3119, 1760, 1762, 1764, 1768
HOZELOCK Aquaforce Pond Pumps
HOZELOCK Titan Pond Pump