Vehicles require frequent replacement doors and windows sealed

The meter seal on the doors and windows use a long time, because of aging and deformation, cracking, this will greatly reduce the tightness, which appears sound effects decreased, air leakage, poor door shut, leaking, or even because of deformation hardening sealing strip damaged sunroof motor.
So how can we prevent these from happening? First, I observe the appearance of seals, when found cracks on the seal, it shows that he has reached the age of the need to replace the point, these small cracks sometimes not obviously, you need to be carefully observed. Then there is the touch, if you find seals begin stiff, rebound effect of variation, which is aging performance. Seals harden card bad sunroof motor, a great economic loss, if then drain flooded interiors that losses will increase exponentially, but largely due to the rebound effect of variation seal, causing the door not closed, in a moving the door to open their own, think about all that horror.
Do not underestimate any car parts, you know you sit in a high-speed machine which, any small mistake may have resulted in great harm.
Usually we can apply a layer of talcum powder seal, it helps seal dry, but also to extend bolt seal life.