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Classic Car Storage: Protecting Your Rubber Seals Over Winter

8 April 2025

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A few simple steps stop your seals cracking and sticking while the car is tucked away.

Rubber does not like sitting still in the heat or cold. Seals that are fine when a car is driven regularly can crack, flatten or stick to the paint when it is parked up for months. A little care before storage keeps them supple.

Clean, treat, and relieve pressure

Clean the door, boot and window rubbers, then apply a rubber-safe conditioner (not a petroleum product, which degrades rubber). Leaving windows up but doors unlatched onto the first catch takes constant pressure off the door seals so they do not take a set.

Keep it dry and out of the sun

Store the car somewhere dry and shaded. UV and damp are what age rubber fastest — a cover in a dry shed does more for your seals than any product.

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This article is general guidance for classic-car enthusiasts. Always work to your vehicle’s specifications and, where safety is involved, consult a qualified professional.