DipSeal Strippable Coatings vs. Plastisol Dip Coatings: Understanding the Critical Differences for Industrial Applications

Created at : May 5, 2026

In the world of industrial coatings, dip-applied materials play a vital role in protecting, enhancing, and extending the life of components across countless industries. However, not all dip coatings are created equal. Two of the most commonly discussed categories—strippable coatings like those offered by DipSeal and traditional plastisol (PVC-based) dip coatings—serve entirely different purposes, despite appearing similar at a glance.

For manufacturers, engineers, and procurement professionals, understanding the distinction between these two coating types is essential. Choosing the wrong one can lead to unnecessary costs, process inefficiencies, or even product damage. Choosing the right one, on the other hand, can streamline operations, reduce labor, and improve product quality.

The Fundamental Difference: Temporary vs. Permanent Protection

At the highest level, the distinction between these two coating systems comes down to intent.

DipSeal’s strippable coatings are engineered for temporary protection. They are designed to adhere securely during handling, shipping, or processing, but ultimately be removed cleanly without damaging the underlying surface.

Plastisol coatings, by contrast, are designed to be permanent. Once applied and cured, they form a durable, long-lasting layer that becomes part of the finished product.

This difference in purpose drives every other distinction between the two systems—from chemistry and curing methods to performance and application.

Chemistry and Material Composition

The underlying chemistry of a coating determines how it behaves during application and throughout its lifecycle.

DipSeal’s strippable coatings are typically formulated using synthetic elastomers, acrylics, or rubber-like polymers suspended in either a solvent-based or water-based carrier system. These formulations are carefully engineered to balance two competing properties: adhesion and cohesion. The coating must adhere well enough to stay in place during use, but maintain enough internal strength to be peeled away in a single piece.

Plastisol coatings are based on polyvinyl chloride (PVC) resin combined with plasticizers. In their uncured state, plastisols are liquid dispersions of fine PVC particles. When heated, these particles fuse together into a homogeneous, flexible solid. Because plastisols contain no solvent that evaporates during curing, they are often referred to as 100% solids systems.

This fundamental difference in composition leads to dramatically different performance outcomes.

Curing Mechanisms and Processing Requirements

One of the most important operational differences between DipSeal coatings and plastisol coatings lies in how they cure.

DipSeal coatings typically cure through evaporation or low-temperature drying. In solvent-based systems, the carrier evaporates, leaving behind a continuous elastic film. In water-based systems, water evaporates and the polymer particles coalesce into a cohesive coating. These processes generally occur at ambient temperatures or with mild heating, making them energy-efficient and easy to integrate into existing workflows.

Plastisol coatings require high-temperature curing, typically in the range of 300 to 400 degrees Fahrenheit. During this process, the PVC particles absorb plasticizer, swell, and fuse into a continuous matrix. This thermal fusion step is essential to achieving the final mechanical properties of the coating.

From a manufacturing standpoint, this means plastisol operations require ovens, precise temperature control, and longer processing times, while DipSeal coatings can often be applied with simpler equipment and lower energy consumption.

Adhesion and Removability

Adhesion is where the most critical functional difference between these coatings becomes apparent.

DipSeal coatings are engineered for controlled adhesion. They are designed to grip the substrate securely enough to withstand handling, abrasion, and environmental exposure, but not so strongly that they cannot be removed. When properly applied, these coatings can be peeled away cleanly, often in a single piece, without leaving residue or requiring additional cleaning.

This peelability is not an afterthought; it is a core design feature. The coating’s internal cohesion—the strength that holds the film together—is intentionally higher than its adhesion to the substrate. This ensures that removal occurs at the interface between the coating and the part, rather than within the coating itself.

Plastisol coatings behave in the opposite manner. They are designed for maximum adhesion and permanence. Once cured, they form a strong mechanical bond with the substrate. Removal is not practical without damaging the coating or the part, and typically requires cutting, grinding, or chemical stripping.

For applications where the coating must remain in place for the life of the product, this is ideal. For applications requiring temporary protection, it is a significant limitation.

Film Properties and Performance Characteristics

While both coating types can produce flexible, rubber-like films, their performance characteristics differ in important ways.

DipSeal coatings are highly flexible and resilient, allowing them to conform to complex geometries and withstand movement without cracking. They are typically applied in medium to thick layers, providing robust protection against scratches, contaminants, and corrosion during temporary use. Their surface finish can range from smooth to slightly textured, depending on the formulation and application method.

Plastisol coatings also offer flexibility, but are generally optimized for durability and long-term performance. They can be applied in a wide range of thicknesses, from thin protective layers to thick, cushioned coatings used for grip or impact resistance. Plastisols can be formulated to provide excellent resistance to chemicals, moisture, and electrical conductivity, making them suitable for demanding environments.

The key difference is longevity. DipSeal coatings are designed to perform for a defined period and then be removed, while plastisol coatings are designed to remain intact indefinitely.

Application Processes and Production Considerations

Both DipSeal and plastisol coatings are commonly applied using dip coating processes, but the details of those processes differ significantly.

In a typical DipSeal application, parts are cleaned and optionally preheated, then immersed in the coating material. After withdrawal, excess coating drains off, and the part is allowed to dry or is placed in a low-temperature oven to accelerate curing. Because high heat is not required, the process is relatively fast and energy-efficient. Additionally, the ability to peel the coating after use simplifies downstream operations.

Plastisol application often involves preheating the part before dipping. The heated substrate causes the plastisol to gel upon contact, building thickness rapidly. After dipping, the part is transferred to an oven for full fusion and curing. The process requires careful control of temperature, dwell time, and withdrawal speed to achieve consistent results.

From an operational standpoint, DipSeal systems offer greater flexibility and lower infrastructure requirements, while plastisol systems demand more specialized equipment and process control.

Use Cases and Industry Applications

The intended use of each coating type clearly reflects its design.

DipSeal strippable coatings are ideal for applications where temporary protection is required. These include protecting machined surfaces during shipping, masking threads or critical areas during plating or painting, preventing contamination during assembly, and safeguarding components from corrosion during storage. They are especially valuable for complex geometries where traditional masking methods such as tape, caps, or plugs are difficult to apply.

In many cases, DipSeal plastic coatings can replace labor-intensive masking processes, reducing both time and cost while improving coverage consistency.

Plastisol coatings are used in applications where permanent protection or functionality is needed. Common examples include tool handles with ergonomic grips, electrical insulation for wires and components, protective coatings for consumer products, and long-term corrosion resistance in harsh environments.

Because plastisol coatings become part of the finished product, they are selected for their durability, aesthetics, and performance over time.

Cost and Efficiency Considerations

When evaluating coating options, cost must be considered not only in terms of material price but also process efficiency and lifecycle impact.

DipSeal coatings can reduce overall costs by minimizing labor associated with masking and demasking, lowering energy consumption due to reduced curing requirements, and preventing damage that might otherwise result in rework or scrap. Their removability also adds flexibility to manufacturing processes, allowing parts to be protected during multiple stages and then returned to their original condition.

Plastisol coatings, while potentially more resource-intensive to apply, provide long-term value by eliminating the need for additional protective measures. Their durability can extend product life and reduce maintenance requirements, making them cost-effective for permanent applications.

The choice between the two ultimately depends on whether the coating is needed temporarily or permanently.

Making the Right Choice

Selecting the appropriate coating system requires a clear understanding of the application’s requirements.

If the goal is to protect a component during manufacturing, transport, or storage—and then remove that protection without affecting the part—DipSeal’s strippable coatings are the superior choice. Their ability to conform to complex shapes, provide uniform coverage, and peel away cleanly offers significant advantages over traditional masking methods.

If the goal is to enhance a product with a durable, long-lasting coating that provides grip, insulation, or environmental resistance, plastisol coatings are the better option. Their strength and permanence make them ideal for finished goods that must perform reliably over time.

Understanding this distinction allows manufacturers to avoid common pitfalls, such as attempting to use permanent coatings for temporary protection or relying on inadequate masking methods for complex parts.

Conclusion

Although DipSeal strippable coatings and plastisol dip coatings may appear similar in form, they are fundamentally different in function. One is designed to protect temporarily and be removed effortlessly; the other is intended to remain as a permanent part of the product.

These differences are rooted in their chemistry, curing processes, adhesion characteristics, and performance profiles. By recognizing and leveraging these distinctions, manufacturers can make more informed decisions, optimize their processes, and achieve better outcomes.

In an increasingly competitive manufacturing environment, the ability to choose the right coating for the right application is not just a technical consideration—it is a strategic advantage.