Description
The 3M 7000118314 Wetordry paper sheet 431Q is made for precision wet or dry finishing across metal and painted surfaces. This 11" x 9" sheet combines sharp silicon carbide abrasive with a resilient C-weight paper backing to withstand hand sanding demands. Designed for finishing, surface preparation, and deburring, the 3M Wet or Dry paper sheet 431Q delivers repeatable micro-scratch patterns for predictable polishing outcomes. C-weight waterproof backing maintains dimensional stability when used wet, reducing loading and sustaining cut rate during extended cycles. The 120 grit abrasive grade bridges material removal and surface blending, making it a versatile choice in multi-step finishing sequences. Technicians appreciate the sheet format for fast sizing and targeted work on panels, edges, and localized defects without excess waste. Silicon carbide chemistry was selected to give a controlled, consistent abrading action on all metals and painted substrates. Wet sanding capability reduces airborne dust and allows finer control of finish when combined with lubricants or rinse water. This sheet integrates easily into paint shop workflows where uniform surface texture is required prior to priming or clearcoat application. Its closed-coat abrasive laydown provides dense mineral coverage for an even abrasive life over the working area of each sheet. Durability of the backing supports repeated finishing passes while resisting tearing and edge breakdown under hand pressure. The 3M 7000118314 is suitable for technicians who require both an aggressive cut and the ability to refine surfaces toward final polish targets. Process engineers will find predictable performance across batches, aiding quality control for finishing specifications and Ra targets. Easy-to-handle sheets speed manual operations, helping shops maintain cycle time without sacrificing finish quality on components. The product is compatible with standard sanding blocks and hand-finishing tools used in automotive and industrial metal shops. Use the 3M Wetordry paper sheet 431Q where wet sanding is required to manage heat, dust, and loading during precision finishing tasks. Choosing this 3M 431Q sanding sheet supports consistent surface preparation before subsequent polishing or coating steps. Overall, the 3M 7000118314 offers a balanced solution for shops needing a waterproof, robust 120 grit sheet for metal and paint preparation.
Product Features and Benefits
Waterproof C-Weight Backing
The C-weight waterproof backing on 3M 7000118314 provides dimensional stability during wet sanding and resists tearing in hand sanding applications.
120 Grit Silicon Carbide Abrasive
The 120 grit silicon carbide on the 3M 431Q Wet or Dry paper sheet offers an effective compromise between cut rate and surface refinement for paint prep.
Closed-Coat Mineral Distribution
Dense mineral laydown ensures uniform abrasion across the sheet, extending usable life and delivering consistent finish results for all metals.
Sheet Format For Targeted Work
Standard 11" x 9" sheets are easy to trim and apply to sanding blocks, making the 3M 431Q ideal for localized defect removal and edge blending.
Wet or Dry Versatility
Designed to run wet or dry, the 3M 7000118314 supports process flexibility—wet use reduces dust and loading, while dry use enables quick inspections.
Product Specifications
| Manufacturer Part Number | 7000118314 |
| Legacy SKU | 60070015734 |
| Overall Length (Inch) | 9.0" |
| Overall Length (mm) | 228.6cm |
| Overall Width (Inch) | 11.0" |
| Overall Width (mm) | 279.4mm |
| Core Size (mm) | 0.0 NP |
| Micron Grade | Non Pertinent |
| Product Form | Sheet |
| Core Size (Inch) | 0.0 NP |
| Product Number | 431Q |
| Sanding Type | Wet |
| Substrate | All Metal |
| Equipment-Machines | Hand Sanding |
| For Use On | All Metals |
| Grade | Non Pertinent |
| Grit | 120 |
| Product Color | Black |
| Color Family | Black |
| Coat Type | Closed Coat |
| Backing Weight | C Weight |
| Backing Material | Paper |
| Abrasive Material | Silicon Carbide |
| Application | Finishing, Surface Preparation, Deburring |
Frequently Asked Questions
What surfaces is the 3M 7000118314 best for ?
The 3M 7000118314 is optimized for use on all metals and painted substrates where a waterproof 120 grit sanding sheet is required.
How to choose 120 grit sandpaper for a project?
Choose 120 grit when you need moderate material removal with enough control to transition to finer grits for paint prep or smoothing.
What are waterproof abrasive backing advantages?
Waterproof backing allows wet sanding to reduce dust and loading, improves the life of the 3M Wetordry paper sheet 431Q, and stabilizes the sheet under tension.
What are the differences between paper and cloth backing?
Paper backing offers better flexibility and trimability for hand work, while cloth backing increases tear resistance for powered sanding.
Can the 3M 431Q sanding sheet be used in paint prep workflows?
Yes, the 3M 431Q sanding sheet is commonly used in paint prep for leveling, feathering edges, and creating a controlled surface for primers and clearcoats.
Warning:
This product can expose you to materials and/or chemicals including arsenic, lead, and other materials and/or chemicals which are known to the state of California to cause cancer and/or reproductive harm.
For more information, visit www.P65Warnings.ca.gov
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