Synthetic dustbags are altogether stronger, better filtration and all round more efficient.
The following machines previously used Nilfisk Part Number 81846000 which were for The Nilfisk GM200 Series That is the Nilfisk GM200, GM200E, and GM210
Also the Nilfisk GM300 Series That is the Nilfisk GM300, GM310, GM320, GM330
And the Nilfisk GM400 Series That is the Nilfisk GM400, GM410, GM420, GM430
As well as the Nilfisk Olympic Series That is the Nilfisk BRONZE, SILVER, & GOLD
These are also for the Nilfisk GM SPRING GM Extra ARNOLDI
From Mid 2013 Nilfisk suggest you use Part Number 147-0286-500 for the previously mentioned Nilfisk vacuum cleaners.
This 147-0286-500 pack of 4 dustbags complete with a new pre-filter, is for the Nilfisk Extreme series X100, The Nilfisk Extreme X150, The Nilfisk Extreme X200, The Nilfisk Extreme X210, The Nilfisk Extreme X300.
However, this dustbag GARAF1092S is better value, as they are larger, and are in a pack of 5, complete with a pre-filter and more affordable.
As these are light, maximise the saving on postage and buy some of the related parts below, such as the filters or a new floor tool.
At the moment standard postage is capped at a maximum of $20 within Australia.