Is 'Crankshaft Sealing for Husqvarna 135, 140, 435, 440 Chainsaw - 544 25 12-01' a crank shaft sealing kit or a single seal ? If it is not the complete kit can you give me an order list for all the parts required please?

It is just one seal. Here is a list of the parts required: 504 79 40 01 - https://www.lsengineers.co.uk/husqvarna-engine-gasket-kit-fits-435-435e-440e-chainsaws-504794001.html 544 25 13 01 - https://www.lsengineers.co.uk/oil-seal-for-husqvarna-435-chainsaw.html 544 25 12 01 - https://www.lsengineers.co.uk/crankshaft-sealing-for-husqvarna-oem-no-544-25-12-01.html https://www.lsengineers.co.uk/crankshaft-assembly-for-husqvarna-435e-chainsaw.html#