4-inch 15-Hole Yellow Sanding Disc P240 is a 100-mm hook-and-loop sanding disc suitable for dry sanding, dust-free sanding, surface preparation, primer sanding, paint finishing, wood sanding, plastic sanding, and pre-painting preparation of metal surfaces.
This product features a yellow abrasive surface, a 15-hole dust collection pattern, and a hook-and-loop backing. The P240 grit size belongs to the coated abrasive grit size system used for sandpaper and sanding discs; the ISO 6344 standard specifies grit size designations for coated abrasives, with P240 falling within the fine grit range defined by ISO 6344-3.
Aozhong offers this sanding disc for users who need a 4-inch disc for spot repairs, edge sanding, small panel sanding, and sanding curved parts. The 15-hole pattern facilitates attachment to a dust collection pad, thereby reducing dust buildup during the sanding of primer, putty, wood, and coatings.
The P240 sanding disc is suitable for use after coarse sanding and before fine sanding. It removes sanding marks left by P120 or P180 discs, preparing the surface for subsequent sanding with P320 or P400 discs, or for coating, painting, and surface finishing.
P240 yellow sanding disc is mainly used for scratch refinement, surface leveling, coating preparation, and dry sanding with dust extraction systems.
P240 is not designed for material removal. It is mainly used for scratch refinement, surface leveling, and preparation before coating or finer sanding.
The 15-hole layout supports dry sanding with compatible dust extraction systems, helping reduce dust accumulation and improve surface visibility during sanding.
The 4 inch 15-hole yellow sanding disc P240 is built as a coated abrasive disc, using abrasive grain, resin bonding, paper backing, loop attachment, and a 15-hole dust extraction layout.
The structure is designed for sanding, scratch refinement, grain retention, hook-and-loop mounting, and dust extraction during dry sanding.
Abrasive Layer
Bonding Layer
Backing Layer
Attachment Layer
Hole System
P240 abrasive grain is used for sanding, scratch refinement, and surface preparation before coating or finer sanding.
The resin bonding system helps retain abrasive grains and keeps them firmly attached during sanding operations.
The backing layer uses paper backing, based on the product image and product correction, providing support for the abrasive layer.
The loop backing allows the sanding disc to be attached to compatible hook-and-loop sanding pads.
The 15-hole dust extraction layout supports dry sanding with compatible dust extraction systems and helps reduce dust accumulation.
This product is a coated abrasive disc. Coated abrasive products commonly use abrasive grain fixed to a backing and are supplied in forms such as discs, rolls, sheets, belts, and sponges.
P240 is commonly used as an intermediate sanding stage for scratch refinement, surface leveling, and preparation before finer sanding or coating.
P240 is usually selected after coarse sanding and before finer sanding steps. It helps refine scratches, level the surface, and prepare the workpiece for primer sanding, coating, or finer abrasive grades.
Used for body repair sanding, filler refinement, primer preparation, and surface transition before moving to finer sanding.
Used as an early primer sanding step to refine the surface before P320 or P400 sanding stages.
Used after P180 sanding to improve surface smoothness before painting, coating, or final surface preparation on wood substrates.
