How Plastisol Coatings Help Dampen Vibration in Brake and Suspension Systems
The Role of Plastisol Coatings in Vibration Damping for Automotive Systems
Brake and suspension systems experience some of the highest levels of mechanical stress and vibration in any vehicle. From road impacts to sudden braking, these components require added support to ensure performance, safety, and longevity. One of the most effective solutions is Plastisol dip coating—a flexible, durable material that absorbs vibration and prevents metal-on-metal contact.

At Precision Dip Coating, we specialize in applying Plastisol coatings to enhance the noise and vibration control of critical automotive components.
Why Brake and Suspension Systems Need Vibration Control
These systems are constantly in motion and directly connected to the chassis, meaning they transfer vibration and noise into the vehicle frame. If not properly isolated, this can result in:
- Increased wear and fatigue
- Rattling or squeaking noises
- Reduced driver comfort
- Poor braking response

Coatings act as a dampening layer that reduces these impacts at the source.
What Is Plastisol Coating and How Does It Work?
Plastisol is a polyvinyl chloride (PVC) compound that starts as a liquid and is cured into a flexible, rubber-like solid through heat. When applied through dip coating, Plastisol forms a smooth, seamless layer that conforms to even complex geometries.
Its performance benefits include:
- High vibration absorption
- Resistance to abrasion and impact
- Flexibility in extreme temperatures
- Chemical and moisture resistance

This makes Plastisol ideal for brake calipers, brackets, bushings, and suspension support hardware.
Key Applications in Brake and Suspension Components
1. Brake Clips and Shims
Thin metal components in brake assemblies are notorious for squealing due to vibration. A Plastisol coating dampens resonance, reduces noise, and adds durability.
2. Suspension Mounts and Bushings
Suspension bushings coated with Plastisol can better absorb shock and road impact, leading to a smoother ride and less fatigue on surrounding parts.

3. Brackets and Retainers
Brake line brackets and suspension retainers often experience chattering or vibrational wear. Plastisol adds a buffer layer that minimizes this damage.
Benefits of Using Plastisol Over Other Coatings
Compared to powder or epoxy coatings, Plastisol offers superior vibration damping due to its soft, elastic properties. It's also:
- More forgiving under compression
- Excellent for irregular part shapes
- Thicker coating builds available (0.02”–0.15”)
While powder coatings offer great abrasion resistance, and epoxies bond tightly to metal, Plastisol excels in isolating parts from vibration and absorbing energy.
Precision Application Makes the Difference
The effectiveness of Plastisol depends heavily on how it's applied—from surface preparation to dip duration, curing time, and thickness control. At Precision Dip Coating, our in-house engineering team ensures consistent, high-performance coatings for every part.
We serve Tier 1 and OEM automotive suppliers looking to reduce vibration in high-wear components and meet modern NVH (Noise, Vibration, Harshness) standards.
Visit us at 176 Chase River Rd, Waterbury, CT 06704
Call (203) 805-4564
Email:
sales@precisiondipcoating.com
