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Rust Breaker Penetrant - 10 oz aerosol - fast-acting rust loosening - Sprayon LU103
SKU: SPR-LU103
Sprayon LU103 Rust Breaker Penetrant is a 10 oz aerosol penetrant for loosening rusted bolts, nuts, joints and seized parts in maintenance and automotive work. Source listings describe it as a fast-acting, non-staining oil that penetrates grease and dirt, displaces moisture, and leaves a light corrosion-inhibiting film.
What this product is for
Sprayon LU103 Rust Breaker Penetrant is used to help free rusted, seized or corroded metal parts such as bolts, nuts, hinges, pins and mechanical joints. It is supplied in a 10 oz aerosol can for maintenance shops, industrial service work and automotive repair.
Use for
Use for loosening rusted threaded fasteners, penetrating tight metal-to-metal joints, displacing moisture on metal parts, and leaving a light protective film after service. It is commonly used in shops, plants, garages and field maintenance.
Avoid for
Avoid using where a dry lubricant, food-grade lubricant, dielectric treatment or heavy long-term coating is required. Confirm material compatibility before use on painted, finished, plastic or rubber-adjacent surfaces.
Best for
Best for maintenance teams and technicians who need an aerosol penetrant that works into rust, grease and dirt to help release stuck parts with less teardown time.
Installed in
Typically used on equipment, vehicles, shop assemblies, industrial machinery, hardware, brackets and exposed metal fasteners. This is a service chemical and is not a permanently installed electrical component.
Why this product exists
Penetrants like LU103 are made to creep into corroded interfaces where standard lubricants may not reach easily. A typical trade use is to apply the penetrant, allow soak time, then work the fastener or joint loose. Actual release performance depends on corrosion level, fit-up, temperature and dwell time.
Compared with similar products
Compared with general-purpose lubricants, a dedicated rust penetrant is intended specifically for freeing seized parts. Source listings for LU103 describe a fast-acting formula, non-staining oil characteristics, moisture displacement and a light corrosion-inhibiting film, which can make it a better choice when the main goal is part release rather than long-term lubrication.
Specifications
- Brand: Sprayon
- Manufacturer part number: LU103
- Product family: Rust Breaker Penetrant
- Container size: 10 oz aerosol
- Form: Aerosol penetrant
- Appearance: Amber liquid in aerosol form
- Key functions: Loosens rust, penetrates grease and dirt, displaces moisture, leaves light corrosion-inhibiting film
- Typical application: Industrial maintenance and automotive service
- Temperature range listed by one distributor: -20 to 550 deg F (-29 to 288 deg C)
Check the current label and SDS before use for handling, storage and safety requirements.
- ApplicationIndustrial maintenance and automotive service
- Product FamilyRust Breaker Penetrant
- Container Size10 oz aerosol
- FormAerosol penetrant
- BrandsSprayon
- Stock in Elmira6
- Stock in Flesherton11
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Aptico Supply helps electricians, contractors, and commercial buyers get the electrical materials they need without unnecessary delays. Whether you are ordering for a jobsite, restocking service inventory, or arranging pickup, our delivery options are designed to keep work moving.
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Free daily delivery is available for larger contractor accounts.
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Free weekly delivery is available for smaller accounts in select service areas.
- Elmira area delivery: Tuesday
- Flesherton area delivery: Thursday
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- Flesherton pickup available
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See our local delivery coverage below. Delivery charges may apply outside regular route areas or for oversized items.
Delivery Questions
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Yes, free delivery is available for qualifying contractor accounts and selected local delivery routes.
Can I pick up my order?
Yes, pickup is available from our Elmira and Flesherton locations.
Do delivery charges apply?
Delivery charges may apply outside regular local routes, for smaller orders, or for oversized and heavy items.
Can you deliver to jobsites?
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