Caravan Motorhome Window Rubber Seal & Grey Insert (CS786G). Fits 28-30mm Panel

Over time the seals around your windows will compress and become less effective resulting in water ingress and potential damage to your caravan or motorhome. This double glazed opening window seal is designed to replace your existing opening window rubber. It fits onto a 30mm thick panel and has a 13mm diameter sealing bulb.

This item is sold per metre. Please enter the quantity of metres that you require in the quantity box. For example, if you enter 6 in the quantity box you will receive a continuous 6 metre length. (The maximum length available in one piece is 20 metres).

This listing is for the window rubber and grey cover insert strip. If you require the black or white insert strip, please see our other eBay listings in our eBay shop or on our website.

Fitting Tools

We recommend using our fitting tool and silicone spray when inserting the grey, white or black cover strip into the caravan and motorhome window rubber. Click here to see our eBay shop to purchase these items.

How to Measure Your Window Rubber Seals

You will need to measure the panel (wall) thickness of your caravan or motorhome and diameter of the sealing bulb on your existing seal to determine the correct replacement seal.

Part Number Wall Thickness Bulb Diameter
CS1679 25mm 10mm
CS784 25mm 13mm
CS1680 27mm 10mm
CS785 27mm 13mm
CS1681 30mm 12mm
CS786 30mm 13mm
CS4090 30mm 13.5mm
CS3002 35mm 12mm
CS4091 35mm 13.5mm
CS4556 36mm-40mm 10mm
Click here to visit our eBay shop to view these products
To measure the panel thickness, remove the existing seal and measure the thickness of the wall. This measurement should be between 25mm and 40mm. If you are not able to remove the existing seal, you can calculate the wall thickness using two pieces of wood. Place one piece of wood under the seal on the outside of the van and the other piece of wood under the seal on the inside of the van.

Take a measurement from the outside of one piece of wood to the outside of the other piece of wood. You can calculate the wall thickness of the van by subtracting the thickness of the two pieces of wood from the overall measurement.

For example, if the overall measurement (A) is 77mm and wood B and wood C both measure 25mm, the wall thickness will be A (77mm) - B (25mm) - C (25mm) = 27mm.


You will also need to measure the diameter of the sealing bulb (D) on your existing seal. This measurement should be between 10mm and 14mm.

There are two different styles of sealing bulbs on opening caravan window rubbers. The first type has a fin and the second type has a double bubble. We recommend looking at your existing seal to determine the shape of sealing bulb required.

YouTube Video
Please see our YouTube video at https://www.youtube.com/watch?v=5kthfMx2IFA for a demonstration of how to fit your caravan or motorhome window rubber.

Additional Information

eBay Template Designed by: