Genuine Dometic Window Rubber White Insert - Sold Per Metre
For Swift, Sterling and Sprite Caravan or Motorhome
Covers up the staples that hold the rubber in place - 
- and tightens the fit of the rubber onto the aperture
24.4mm x 1.1mm
To replace it, you must remove the window catch plates. 
 It can be fitted with a screwdriver to ease it in to position
- combined with a lubricant such as
- washing up liquid, silicone spray or Pledge