3M Wetordry Paper Disc 431Q, 400 C-weight, 8 in x NH, Die 800L, 100/Carton, Case of 500

• Adhesive backing provides easy attachment to random orbital sander
• Silicon carbide mineral cuts faster than aluminum oxide and produces a smoother finish
• Strong C-weight paper backing provides durability for either hand or machine sanding
• Versatile disc can be run wet or dry on paint, primer, gel coat, metal, and wood
• Waterproof backing supports wet applications for decreased loading and a faster cut

3M Wetordry Paper Disc 431Q features extra-fast cutting silicon carbide on a strong, waterproof paper backing that gives you superior finishing for both wet and dry applications on a variety of substrates.

Used with water, our 3M™ Wetordry™ discs enable you to rinse areas of the workpiece and the sheet during use to prevent dust and debris from clogging the points of the abrasive and reduce air-borne dust, while producing a faster cut at the same time. These versatile discs are ideal on surfaces that tend to generate a lot of dust, such as paint, primer, and wood; and can also be used dry for finishing metal and gel coats. The adhesive backing provides easy attachment to a random orbital sander.

We chose silicon carbide, a mineral that is very hard and fractures easily, resulting in freshly exposed sharp edges that cut extra fast and produce a smooth, professional-looking finish. Silicon carbide products are commonly used for low-pressure applications such as paint prep and finishing on wood and metal. While it wears faster than aluminum oxide, it produces a superior finish.

3M™ Wetordry™ products are backed with a 3M proprietary durable waterproof paper backing that supports both wet and dry applications. Lighter weight than cloth, and smooth rather than textured, paper backing is preferable for lighter applications such as finishing and paint prep. At the same time, many such applications produce a significant amount of dust, clogging the abrasive points and creating an inferior work environment. These effects can be minimized by sanding with water to rinse dust away from the workpiece and the abrasive surface.

Trusted 3M Wetordry Model

The 3M Wetordry Paper Disc 431Q is designed for reliable sanding performance. This exact model offers a strong adhesive backing that makes it easy to attach to a random orbital sander, ensuring quick setup and consistent use.

Its 400 C-weight paper backing adds durability, allowing it to handle both hand and machine sanding tasks. This combination makes the 431Q a dependable choice for various sanding jobs.

Superior Silicon Carbide Mineral

Featuring silicon carbide mineral, this disc cuts faster than aluminum oxide and produces a smoother finish. This mineral fractures easily, exposing sharp edges that maintain cutting speed and quality throughout use.

Ideal for low-pressure applications like paint prep and finishing on wood and metal, the silicon carbide ensures a professional-looking finish, even though it wears faster than aluminum oxide.

Versatile Wet Dry Use

This disc is versatile enough to be used wet or dry on a variety of surfaces including paint, primer, gel coat, metal, and wood. The waterproof backing supports wet applications, reducing loading and speeding up the cut.

Using water with the disc helps rinse away dust and debris, preventing clogging and reducing airborne dust. This makes it especially useful on dusty surfaces like paint and wood.

Exact Size And Format

The disc measures 8 inches in diameter with an NH arbor hole, matching the Die 800L format. This size and format ensure compatibility with many random orbital sanders and sanding setups.

Its dimensions make it suitable for a wide range of sanding tasks, providing a balance of surface coverage and control for detailed or broad sanding jobs.

Convenient Pack Count

Available in a pack of 100 discs per carton and 500 discs per case, this product offers ample supply for extended projects or professional use. The large pack count helps reduce frequent reordering and downtime.

This quantity is ideal for workshops or contractors who need consistent access to quality sanding discs without interruption.