yes could be the seal, also Check all hoses and hose connections, look at the seals around the heater and thermostat at rear of drum. Check the detergent dispenser for blockage and overflow. Check for rusty spray around where the drum shaft enters the outer drum - early indication of seal and bearing failure.
Check out this site for spares : www.4directelectricals.co.uk
Check out this site for info: www.2ndwave.co.uk/manual.html
dan
February 2008