Wool wax, derived from sheep’s wool, and Fluid Film, a lanolin-based corrosion inhibitor, both offer rust protection, but differ significantly in their composition, application, longevity, and overall performance. Wool wax, often referred to as lanolin itself, is a natural product, while Fluid Film is a formulated product containing lanolin and other additives designed for specific applications, primarily rust prevention.
Understanding the Fundamentals
What is Wool Wax?
Wool wax, also known as lanolin, is a natural wax ester secreted by the sebaceous glands of wool-bearing animals, primarily sheep. It acts as a natural protective coating, shielding the sheep’s fleece from the elements. In its raw form, lanolin is a complex mixture of esters, sterols, and fatty acids. When refined, it’s used in a wide variety of products, including cosmetics, lubricants, and, relevant to this discussion, as a rust preventative. The primary advantage of wool wax is its natural origin and its ability to penetrate existing rust and create a protective barrier. However, its application and durability can vary significantly depending on the refinement process and any additives.
What is Fluid Film?
Fluid Film is a brand name for a specific product formulated from unrefined lanolin. This means it contains more of the raw lanolin’s components than highly refined lanolin commonly found in cosmetics. Fluid Film also includes additives, often proprietary, designed to enhance its corrosion-inhibiting properties, improve its spreadability, and prolong its lifespan. Fluid Film is primarily marketed as a rustproofing agent for vehicles, machinery, and marine applications. It distinguishes itself through its non-drying, self-healing properties, remaining soft and pliable over time, which allows it to continue creeping into seams and crevices, providing ongoing protection.
Key Differences Explained
The fundamental difference lies in their composition and formulation. Wool wax, in its pure form, is a single ingredient product. Fluid Film, on the other hand, is a manufactured product composed of lanolin and a carefully selected blend of additives. This difference results in variations in their:
- Penetration ability: Fluid Film’s additives enhance its ability to penetrate existing rust and prevent further oxidation. While raw lanolin can penetrate, Fluid Film is generally considered superior in this regard.
- Longevity: The additives in Fluid Film often contribute to a longer lifespan compared to pure wool wax, especially when exposed to harsh environmental conditions.
- Viscosity and Application: Fluid Film is formulated to be easier to apply using spray equipment, while pure wool wax can be thicker and require different application methods.
- Odor: Fluid Film often has a distinct, somewhat noticeable odor, which can be either agreeable or disagreeable depending on individual preferences. Pure wool wax also has a characteristic odor, though it may be less intense.
- Cost: Pure wool wax, especially refined grades, can be more expensive than Fluid Film depending on the source and quantity purchased.
Ultimately, while both originate from lanolin, their purpose and formulation dictate their suitability for specific rustproofing applications. Fluid Film is engineered for industrial and automotive rust prevention, prioritizing longevity and performance, while pure wool wax might be preferred for its natural origin in other applications.
Frequently Asked Questions (FAQs)
Here are some common questions related to wool wax and Fluid Film, addressing their properties, applications, and overall suitability:
FAQ 1: Is Fluid Film just rebranded wool wax?
No. While Fluid Film utilizes lanolin as a primary ingredient, it is a formulated product containing additives that enhance its performance as a corrosion inhibitor. It is not simply rebranded wool wax; it is an engineered product with specific properties tailored for rust prevention.
FAQ 2: Can I use pure lanolin as a rust preventative?
Yes, you can use pure lanolin as a rust preventative. However, its effectiveness might be less than that of Fluid Film, especially in demanding environments. The additives in Fluid Film enhance its penetration, adhesion, and longevity. Using pure lanolin might require more frequent applications.
FAQ 3: Does Fluid Film dry out?
No, Fluid Film is designed to remain non-drying. This is a key characteristic that allows it to continue creeping into crevices and self-healing minor scratches, providing ongoing protection. This distinguishes it from some other rustproofing compounds that can harden and crack over time.
FAQ 4: How often do I need to reapply Fluid Film?
The reapplication frequency depends on the environment and usage. In general, Fluid Film is recommended to be reapplied annually or bi-annually for vehicles exposed to harsh winter conditions, road salt, or frequent off-road use. In less demanding environments, reapplication may be less frequent.
FAQ 5: What are the advantages of using a lanolin-based rust preventative?
Lanolin-based rust preventatives, like both wool wax and Fluid Film, offer several advantages:
- Penetration: They can penetrate existing rust and create a protective barrier.
- Non-drying: They remain pliable and self-healing.
- Corrosion Inhibition: They actively inhibit the corrosion process.
- Natural Origin: Lanolin is a renewable resource.
FAQ 6: Is Fluid Film safe for rubber and plastic components?
Fluid Film is generally considered safe for most rubber and plastic components commonly found in vehicles and machinery. However, it is always recommended to test a small, inconspicuous area first to ensure compatibility, especially with sensitive or aged materials.
FAQ 7: Can I paint over Fluid Film?
Painting over Fluid Film is generally not recommended. The oily nature of Fluid Film can interfere with the adhesion of paint, leading to peeling or other issues. If painting is necessary, thoroughly clean and degrease the surface before applying paint.
FAQ 8: Does Fluid Film attract dirt?
Yes, Fluid Film, due to its oily nature, can attract dirt and dust. This is a common characteristic of non-drying rust preventatives. While this may make the treated surface appear dirty, the dirt layer can provide an additional layer of protection in some circumstances.
FAQ 9: Is Fluid Film environmentally friendly?
Compared to some other rustproofing chemicals, Fluid Film is considered more environmentally friendly due to its lanolin base. However, it is still a chemical product, and proper disposal is essential. Check local regulations for disposal guidelines.
FAQ 10: Can I apply Fluid Film myself, or do I need professional application?
Fluid Film is designed for both DIY and professional application. Its relatively simple application process, typically involving spraying, makes it accessible to many users. However, professional application may offer more thorough coverage, especially in hard-to-reach areas.
FAQ 11: What is the shelf life of Fluid Film?
Fluid Film typically has a shelf life of several years when stored properly in a cool, dry place. Check the product label for specific recommendations regarding storage and shelf life.
FAQ 12: Can Fluid Film be used in marine environments?
Yes, Fluid Film is commonly used in marine environments to protect metal surfaces from saltwater corrosion. Its ability to penetrate and resist water washout makes it a suitable choice for boats, docks, and other marine equipment. However, more frequent applications may be necessary in harsh marine environments.