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Penetrant vs. Lubricants: When to use which one 

October 2, 2023
By B'laster Holdings
 for the Blue Print
Employee spraying product
When it comes to saving time and money on projects, using the right tools, including chemicals like penetrants and lubricants, is crucial.
 
Imagine dealing with a rusted bolt or a corroded lock that won't budge. You might have tried a multi-purpose lubricant but didn't get the expected results. This happens due to confusion between two products: Penetrants and Lubricants.
 
This misunderstanding often leads to incorrect use of these products, which could keep projects from being completed as intended. Whether you're a professional or a DIYer, understanding the difference between penetrants and lubricants is essential to maximizing their benefits.
​

People often misuse these products. Research shows that 23% of multi-purpose lubricant users apply them incorrectly. According to Tom Hrabak, B’laster’s chemist, the confusion arises from not understanding the products' intended purposes.
 
Starting with the basics, a penetrant is a solvent-based formula that breaks through rust and corrosion on stuck parts. A lubricant, on the other hand, is an oil-based formula that reduces friction on moving parts, displaces moisture, and prevents further rust and corrosion.
B'laster Product
There is a clear difference when testing the penetrating qualities of a penetrant vs. a multipurpose lubricant over an eight-hour duration. The penetrant wicks its way up and across the metal surface, even into the tight confines of a rusty threaded fastener. This is because the penetrant is formulated to break through rust and corrosion faster and more effectively than a general, multipurpose lubricant.
 
Common uses for penetrant include rusted nuts, bolts, brakes, and more. Lubricant is great for sliding doors, locks, hand tools, and more.
 
To decide which to use, remember: If it's rusted or stuck, go for a penetrant. If it's sticking or squeaking, opt for a general lubricant. Understanding these products will save you time and money on your tasks.

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Content originally from B'laster Holdings. Reused here with permission.
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