Motoring Articles

Clatonrite Window Rubbers

Clatonrite Seal showing panel and glass and inset where filler is insertedThis type of Windscreen Seal dates back to the early post-war years and I understand was pioneered by General Motors in the United States of America. As can be seen from the illustration on the right the glass is inserted on one side and the opposite fits over a lip on the body of the vehicle.

When refitting a Windscreen or rear Window it is always preferable to use a new rubber seal, if you intend to do this then you can simply cut the old screen rubber with a stanley knife or similar after removing the filler strip. The Windscreen can then be carefully lifted out. If you have to re-use the seal then great care must be taken when removing the glass screen after removal of the filler strip. From inside the car, press the glass at a top corner and ease the glass from the rubber with a helper to hold the glass outside the car. With an old rubber which may well have hardened with age it is all to easy to break the glass so great care must be taken. Once the glass has been removed the seal can be removed from the vehicle body.

Inspect the rubber channel for any glass particles and carefully examine the sealing rubber for cuts or signs of any deterioration. Clean off any old sealer from the windscreen aperture flanges and check the flanges for any damage or distortion. If the screen has broken remember to remove all the glass particles from the heater and demister ducts and tubes.

To refit the glass fit the sealing rubber to the body flanges, lubricate the glass channel in the sealing rubber with a weak soap Glazing Tool Feeding Rubber lip over glassand water solution if necessary. From the outside of the car, position the lower edge of the glass in the channel and very carefully peel the rubber lip over the glass (preferably using the special glazing tool shown further down this page), see illustration on left.

When the glass is fitted in the apature, glazing compound such as Dunlop DP421/2G can be injected on the outside between the seal and the glass and the body flange. When this has been done the next step is to refit the filling strip. This may be a black rubber or perhaps plastic chrome.

Inserting Filler StripStart at the bottom centre of the windscreen and thread the rubber filler through the eye of the tool and under the roller (see illustration). You then insert the eye of the tool into the groove of the seal and feed in the filler, pushing the tool around the entire length of the seal and allowing the roller (if suppliec with your particular tool) to bed the strip into the seal. It will be found beneficial to use a side-to-side motion when going around the corners

The final job is simply to clean off any surplus sealer and to refit the windscreen wiper arms and blades to the vehicle. The above description is to give the reader a general idea of how to carry out this task but we would stress that it is not necessarly the correct proceedure for your particular vehicle and if you have any doubts we would suggest you use a professional firm to do the work for you.

Glazing Tool with attachments

The Glazing Tool and attachments shown on the right make the fitting of windscreens and also back windows so much easier and are available from us at £25.00 the set.


© Dugdalevms 2008