Norton 666233-77543 Hook Loop Paper Disc 5 Inch 180 Grit

Product Description

The NORTON 666233-77543 is a 5-inch, 180-grit hook and loop abrasive paper disc designed for fine finishing and micro-finishing work on a wide range of surfaces. Built on a C-weight latex-backed paper substrate, this disc delivers consistent cut quality while remaining flexible enough to conform to contoured workpieces. A water-based, non-loading stearate coating — part of the Gold Reserve A296 line — resists clogging and extends disc life compared to uncoated alternatives. Grinding and finishing professionals reach for this disc when working with random orbital sanders or right-angle grinders where fast disc changes and reliable finish consistency matter.

This disc is suited for fine grit finishing and micro-finishing applications across aluminum, fiberglass, wood, composites, and primed or painted surfaces. The P-graded aluminum oxide abrasive produces a cool cut that reduces heat buildup at the workpiece surface, making it appropriate for substrates sensitive to thermal damage. Typical use cases include final surface prep before coating, paint or primer scuffing, and composite panel finishing in both shop and field environments.

Key Features

• P-graded premium aluminum oxide abrasive delivers a quick, cool cut and consistent surface finish
• C-weight high-latex paper backing resists tearing while remaining conformable and flexible
• Water-based non-loading stearate coating minimizes clogging and extends disc life
• Hook and loop attachment system allows fast, tool-free disc mounting and removal
• Rated to 15000 RPM for use with standard random orbital sanders and right-angle grinders
• Effective on aluminum, fiberglass, wood, composites, and painted or primed surfaces

Compatibility

Designed for use with 5-inch hook and loop random orbital sanders and right-angle grinders accepting 5-inch hook and loop abrasive discs.

Installation Notes

Confirm the tool backing pad is clean and free of debris before mounting the disc to ensure full hook and loop engagement. Do not exceed the rated 15000 RPM maximum speed. Inspect the disc before each use and discard any disc showing tears, delamination, or compromised backing. Store discs flat in a dry environment away from direct heat sources to maintain backing flexibility and coating integrity.

Technical Specifications

• Diameter: 5 inches
• Grit: 180 (P-grade)
• Abrasive Material: Aluminum Oxide
• Backing Type: C-weight latex paper
• Attachment Type: Hook and Loop
• Coating: Water-based non-loading stearate
• Maximum Speed: 15000 RPM
• Weight: 0.0025 pounds
• Unit of Measure: Each

Standard Information

• Brand: NORTON
• Manufacturer Part Number: 666233-77543