5 in. x 320 Grit PSAdhesive Roll - Qty:100

5-in.PSA Disc No-Hole Sanding Discs - Roll of 100

Get consistent sanding performance with these 80 grit, 5 in. PSA sanding discs. Each disc features a durable aluminum oxide abrasive grain combined with a zinc stearate lubricant that helps resist loading from resin, paint, and wood dust. The result is a longer-lasting disc that maintains its cutting performance through extended sanding applications.

These discs feature a heavier C-weight paper backing for improved durability and a high-quality white aluminum oxide grain for dependable cutting action. The resin-to-resin bond securely holds the abrasive to the backing, while the tear-resistant construction helps the discs withstand demanding shop use.

The pressure-sensitive adhesive (PSA) backing provides a convenient way to attach the discs to compatible sanding equipment. With no dust-extraction holes, this no-hole design is well suited for applications where a solid abrasive surface is preferred.

Ideal for Sealer Sanding, Scuff Sanding & Finish Preparation

The zinc stearate coating helps prevent premature loading, making these discs particularly useful when sanding materials that tend to clog conventional abrasives. They are well suited for sealer sanding, painted wood, scuff sanding, plastics, fiberglass, and general woodworking applications.

Product Features

• For effective material removal and surface preparation
• 5 in. diameter for use with compatible sanding equipment
• No-hole design provides a continuous abrasive surface
• Aluminum oxide abrasive grain delivers durable, consistent cutting performance
• Zinc stearate coating helps resist loading from resin, paint, and wood dust
• C-weight paper backing provides a balance of flexibility and durability
• Tear-resistant backing helps withstand demanding sanding applications
• Resin-to-resin bond securely anchors the abrasive grain
• PSA pressure-sensitive adhesive backing allows convenient attachment to compatible sanders
• Roll contains 100 discs for production work and frequent sanding applications

Specifications

• Disc Diameter: 5 in.
• Disc Type: PSA, no hole
• Abrasive: Aluminum Oxide
• Lubricant: Zinc Stearate
• Bond: Resin to Resin
• Backing: C-Weight Paper
• Backing Features: Tear-resistant, load-resistant
• Quantity: 100 discs per roll

Aluminum Oxide Abrasive Grain

Aluminum oxide (AO) is one of the most widely used abrasive grains for general-purpose sanding. It is manufactured by combining bauxite and other materials and firing them in an electric furnace. The resulting material is crushed and screened to produce specific grit sizes.

The naturally angular shape of aluminum oxide particles provides effective cutting action, while the toughness of the grain allows it to withstand repeated sanding. As the abrasive wears, its cutting edges gradually break down, helping provide a consistent sanding action over the life of the disc.

Aluminum oxide is a versatile abrasive suitable for a wide range of materials, including bare wood, steel and other metals, leather, plastics, fiberglass, painted surfaces, and other materials. Its combination of durability, versatility, and reliable cutting performance makes it an excellent choice for general-purpose sanding.

Zinc Stearate Load-Resistant Coating

The discs are specially coated with zinc stearate, a lubricant designed to help reduce abrasive loading. Loading occurs when sanding debris, resin, paint, or other material builds up between the abrasive grains and reduces cutting efficiency.

By helping resist this buildup, the zinc stearate coating can extend useful disc life and maintain more consistent sanding performance. This makes these discs especially useful for applications involving resinous woods, sealers, painted surfaces, plastics, and fiberglass.

C-Weight Paper Backing

The C-weight paper backing provides a useful combination of durability and flexibility for power sanding applications. Paper backings are available in several weights, ranging from lighter A-weight paper to heavier F-weight paper. C-weight paper is commonly used for sanding sheets and discs where a durable yet workable backing is needed.

The heavier backing used in these discs helps extend service life and provides additional resistance to tearing during normal sanding operations.

Recommended Applications

• Woodworking and general-purpose wood sanding
• Sealer sanding
• Painted wood preparation
• Scuff sanding between finish coats
• Surface preparation
• Plastic sanding
• Fiberglass sanding
• Resinous material sanding
• General finish preparation

Convenient 100-Disc Roll

With 100 individual 5 in. sanding discs per roll, this package is well suited for woodworking shops, production environments, contractors, and users who go through sanding discs regularly. The combination of a durable aluminum oxide grain, zinc stearate coating, heavier paper backing, and PSA attachment makes these discs a practical choice for demanding sanding and surface-preparation work.