Sponsored Content by Steele Rubber Products
By
Steele Rubber Products
—
Updated
in Paint and Body, Tech and How To
Share this article
For classic car enthusiasts, keeping a vehicle in top shape goes beyond paint and mechanical upkeep. One often-overlooked but critical component is the weatherstripping. These rubber seals keep out wind, water, and road noise—but over time, they can shrink, crack, or fail, leading to leaks, rattles, and discomfort.
So how do you ensure that your weatherstripping lasts? We asked the experts at Steele Rubber Products to break down why rubber deteriorates and how to protect it.
Why Does Weatherstripping Deteriorate?
Rubber components on classic cars face a constant battle against time and the elements. The primary culprits behind weatherstripping failure include:
- UV Exposure:Sunlight can dry out rubber, causing it to harden and crack.
- Ozone & Air Pollution:Certain airborne elements and pollutants break down rubber compounds.
- Dirt & Debris:Small particles of dirt, dust, and road grime can accumulate in seals, creating abrasion that gradually wears down the rubber.
- Improper Fitment:Gaps or excess pressure can lead to premature wear or allow moisture to seep in.
- Compression Set:Over time, rubber can lose its elasticity, failing to rebound to its original shape.
- Harsh Cleaners:Some cleaning products can strip away protective oils, accelerating deterioration.
With these factors in mind, proper selection, installation, and maintenance are key to maximizing the lifespan of your weatherstripping.
Choosing the Right Weatherstripping for Your Classic Car
Not all rubber seals are created equal. When replacing weatherstripping, material quality matters. Some aftermarket options use generic rubber compounds that are prone to early failure. Instead, look for:
- 100% EPDM Rubber:Some weatherstripping products use fillers or inferior rubber blends, which can lead to premature drying, cracking, and deterioration. High-quality weatherstripping should be made from 100% EPDM rubber, which resists UV exposure, ozone, and temperature fluctuations far better than rubber with fillers.
- Molded to Fit:Weatherstripping that matches OEM specifications ensures a proper seal without unnecessary stress on doors and windows.
- Authentic Profiles:Using the right shape and density of rubber helps maintain originality and function.
Companies like Steele Rubber Products manufacture weatherstripping using modern materials while maintaining period-correct designs, ensuring a factory-like fit and long-lasting performance.
Proper InstallATION for a Leak-Free Seal
Even the best weatherstripping won’t perform properly if it’s not installed correctly. Here’s how to get the best results:
- Remove Old Seals Completely– Use a plastic scraper and adhesive remover to clean the surface. Leftover residue can prevent new seals from adhering properly.
- Test Fit First– Before applying adhesive, dry-fit the new weatherstripping to ensure proper alignment.
- Use the Right Adhesive– A high-quality weatherstrip adhesive provides a secure bond without breaking down over time.
- Apply Even Pressure– Press the seal into place firmly and evenly.
- Let It Cure– Allow the adhesive to set fully before closing doors or rolling up windows.
How to Maintain Weatherstripping for Longevity
Proper maintenance is essential to extend the life of your weatherstripping. Here are some expert tips:
- Regular Cleaning:Use mild soap and water to gently clean the rubber seals, removing dirt and debris that can cause abrasion and wear. Avoid harsh chemicals, as they can strip away protective oils and accelerate deterioration.
- Routine Inspections:Periodically check for signs of wear, such as cracks, gaps, or hardening, especially after exposure to extreme weather conditions or prolonged storage.
- Ensure Proper Drainage:Keep drainage channels near doors and trunks clear of obstructions to prevent water accumulation, which can damage seals.
While regular cleaning is typically sufficient, if you choose to use a protectant, look for one that offers UV protection, repels dust and dirt, and restores the material’s original appearance.
When to Replace Your Weatherstripping
Even with the best care, your vehicle’s original rubber seals won’t last forever. If you notice water leaks, excessive wind noise, or visible cracking, it may be time to replace them.
High-quality replacement weatherstripping ensures that your classic car remains as comfortable and watertight as it was when it left the factory. By choosing the right materials, installing them properly, and maintaining them regularly, you can keep your ride sealed against the elements for years to come.
For classic car owners looking for premium weatherstripping solutions, Steele Rubber Products has been manufacturing high-quality rubber components for over 60 years. Their expert team can help you find the right seals to fit your vehicle, ensuring a perfect blend of durability and authenticity.
Got questions about weatherstripping or rubber restoration? Reach out to the experts at Steele Rubber Products for advice and recommendations tailored to your classic car.
