3M 7000118258 Sanding Sheet 400 Grit Aluminum Oxide

Product Description

The 3M 7000118258 is a 400-grit aluminum oxide sanding sheet designed for dry finishing work where a super fine surface is required. Part of the 3M 211K series, it uses a J-weight cloth backing that provides flexibility for contour sanding while maintaining enough support for flat-surface finishing passes. Aluminum oxide abrasive is a reliable choice for general-purpose material removal on wood, metal, and composites. This sheet is rated for dry use only and is not waterproof or load-resistant, making it best suited for fine finishing rather than aggressive stock removal.

This sanding sheet fits residential and light commercial finishing applications. It is commonly used by finishing carpenters, painters, and general contractors for between-coat sanding on wood surfaces, light deburring of metal components, and surface prep before priming or topcoat application. The super fine 400-grit designation suits final-stage prep work where scratch patterns must be minimized before applying sealers or finish coats.

Key Features

• 400 grit aluminum oxide abrasive for super fine surface finishing
• J-weight cloth backing provides flexibility for both flat and contoured surfaces
• Series 211K construction engineered for consistent cut and finish
• Dry-use only configuration keeps the sheet appropriate for controlled finishing environments
• Lightweight at 0.01 pounds per sheet for easy handling during extended use

Compatibility

Designed as an OEM-style replacement or standard consumable for use with hand-sanding blocks and orbital finishing sanders that accept standard sanding sheet formats.

Installation Notes

Sanding sheets are installed by finishing trades, carpenters, and general laborers as a consumable abrasive. Secure the sheet firmly to the backing pad or sanding block before use to prevent slippage. Do not use this sheet wet or with liquid lubricants, as it is rated for dry use only. Inspect the sheet for loading or glazing during use and replace when cut rate degrades.