SEM Plastic Prep cleaner spray 12 oz — plastic & leather surface prep, residue-free evaporating

SEM 38353 Plastic Prep is a focused surface cleaner in a 12 oz spray that readies plastic and leather substrates for coating without softening, distorting, or leaving residue.

Designed for professionals and serious DIYers in automotive, marine, and industrial refinish work, this SEM-formulated preparer removes oils, mold-release agents, road grime, and other contaminants that interfere with adhesion. It belongs to SEM’s range of preparatory products and is presented here in a convenient aerosol for quick, targeted use on trim, dashboards, consoles, bumpers, and leather accents.

How does SEM 38353 prepare plastic and leather before painting?

This product dissolves and lifts common surface contaminants while preserving the substrate’s shape and integrity. Unlike aggressive solvents, it cleans without softening or warping plastics and leather, which helps maintain proper fit and finish before primers or coatings are applied.

• Removes oils, waxes, and release agents that block adhesion
• Evaporates cleanly—no tacky residue to trap dust
• Formulated to avoid substrate distortion or softening

When should I choose the 12 oz aerosol over other sizes or formats?

The 12 oz spray is ideal for spot work, touch-ups, and mobile repairs where portability matters. If you’re tackling small panels or intermittent jobs, the aerosol gives controllable coverage without needing larger bulk containers or transfer equipment.

• Compact for shop carts, gun cabinets, or field kits
• Good for precision work on trim, clips, and seams
• Single-operator friendly—no measuring or mixing required

What surfaces and materials are compatible with this prep?

SEM 38353 is formulated for common automotive and marine plastics and leather finishes. It’s intended to clean surfaces prior to primers, paints, adhesives, or dye applications; always test in an inconspicuous area when working with specialty polymers or coated leather.

• Hard and soft plastics found in dashboards, bezels, and bumpers
• Top-coated and finished leather surfaces used in interiors
• Not recommended for untreated fabrics, delicate vinyls without testing

How should I apply it for best results and safety?

Shake the aerosol, spray from a recommended distance, then wipe or allow to flash off depending on surface condition. Use in a well-ventilated area, wear appropriate gloves and eye protection, and follow SEM label instructions for ventilation and disposal.

• Shake can thoroughly before use and test-spray on cardboard
• Spray evenly and wipe with a clean, lint-free towel for heavy contamination
• Allow to evaporate fully before priming or painting

Who is this for? SEM 38353 Plastic Prep in 12 oz aerosol is best for bodyshop technicians, automotive detailers, upholstery specialists, and hobbyists who need a dependable, no-residue cleaner for plastic and leather surfaces. It suits small- to medium-sized jobs where a portable, easy-to-use preparer improves coating adhesion and reduces rework. For large-volume production environments consider bulk sizes or alternate dispensing methods in the SEM line.