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Abrasive Hook And Loop Sanding Paper Discs/wheels/disks Red Hook And Loop Velvet Backing Film Sand Paper Discs

Abrasive Hook & Loop Sanding Paper Discs — Complete Buyer's Guide

Hook-and-loop sanding paper discs are circular abrasive sheets with a Velcro-style backing. The disc face carries abrasive grains — either aluminum oxide or silicon carbide — bonded to a paper or cloth substrate. The reverse side features a loop (or hook) fabric layer that mates with the opposing hook (or loop) pad on a random orbital sander, orbital sander, or compatible backup pad.

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Model:
2inch-9inch
Brand:
沂禾
Code:
6805200000

Product Description

Abrasive Products Guide

Abrasive Hook & Loop Sanding Paper Discs — Complete Buyer's Guide

From coarse stock removal at 60# to ultra-fine finishing at 400#, hook and loop sanding paper discs offer the broadest grit range of any disc format — combined with a tool-free swap system that keeps multi-stage sanding fast and seamless. This guide covers everything: abrasive types, colour coding, size selection, backing options, and application best practices.

Grits: 60# – 400# 6 colour options Sizes: 2" – 9" 100 pcs/box (4"–6") Free samples available

Sandpapaer-Disc

What are hook-and-loop sanding paper discs?

The result is a disc that attaches firmly under load, yet peels away cleanly in seconds when you need to change grits — no adhesive residue, no tool required. This makes hook and loop the dominant attachment system for disc sanders in woodworking, metalworking, auto body, and general surface preparation.

Key features

Tool-free grit changes

Peel and place in under five seconds. Ideal for multi-stage finishing sequences where frequent swaps slow you down.

Self-fracturing aluminum oxide

Grains fracture during use to continuously expose fresh, sharp cutting edges — extending disc life and maintaining consistent cut rate.

Non-filling / anti-clog

Resists loading on paint, wood resins, and soft materials — more uniform polishing lines and longer usable life per disc.

Paper or cloth backing

Softer and more flexible than standard latex paper. Conforms to irregular surfaces and resists tearing at edges.

60# to 400# grit range

The full spectrum from aggressive material removal to ultra-fine pre-polish finishing — all in one disc family.

Custom specifications

OEM and custom orders available — diameter, grit, grain type, backing material, colour, and pack size on request.

Sandpapaer-Disc

Abrasive grain types: aluminum oxide vs silicon carbide

Both grains are available across the range. Choosing the right one for your material type directly affects cut speed, surface finish quality, and disc longevity.

Property	Aluminum oxide (AO)	Silicon carbide (SiC)
Hardness	High	Very high — harder than AO
Fracture behaviour	Self-fracturing: renews sharp edges during use	Friable: sharp but wears faster
Ideal materials	Wood, MDF, soft metals, painted surfaces, composites	Hard metals, glass, ceramics, stone, plastics
Finish quality	Consistent, uniform scratch pattern	Finer, smoother finish at equivalent grit
Disc lifespan	Long — preferred for production use	Shorter — best for precision finishing tasks
Common grit range	60# – 400# full range	120# – 400# (fine finishing emphasis)

Disc colour guide

These discs are available in six colours. Colour may indicate grain type, grit range, or backing material depending on the manufacturer's coding. Always verify the specification label — colour coding is not universally standardised across brands.

Red

Often medium grit; common on standard AO discs

Green

Typically coarse; silicon carbide or heavy-duty AO

White

Fine to very fine grit; stearated / anti-clog coating

Yellow

General purpose; wide grit range across AO variants

Black

Silicon carbide; wet/dry applications, hard surfaces

Purple

Premium ceramic or zirconia grain; high-performance use

Grit selection — what each grade does

Grit number controls aggressiveness and finish quality. Work through grits progressively — each pass removes the scratch pattern of the previous grit. Never skip more than one grit step.

60# coarse

Aggressive stock removal — stripping paint, coatings, and heavy surface damage. Fast but leaves deep scratches requiring follow-up grits.

80# coarse

Heavy sanding, shaping, and levelling. Removes deep scratches from 60# and prepares for medium grits.

120# medium

General surface preparation, removing 80# marks, and pre-stain sanding on wood. A versatile all-round starting grit for clean surfaces.

180# medium

Pre-finish smoothing before the first coat of paint, primer, or varnish. Removes 120# scratches efficiently.

240# fine

Between-coat sanding of paint, varnish, and lacquer. Produces a surface ready for a final topcoat.

320# fine

Final sanding before top coat; light prep on plastics. Leaves a very fine, consistent scratch pattern.

400# very fine

Ultra-fine finishing, wet sanding, and removing minor surface blemishes before buffing or polishing.

Bar length represents relative material removal rate.

Full product specifications

Specification	Detail
Type	Abrasive hook and loop sanding paper disc
Available grits	60#80#120#180#240#320#400#
Abrasive grain	Aluminum oxide \| Silicon carbide
Backing	Paper (glue bond) or velvet — softer and more break-resistant than standard latex paper
Attachment system	Hook and loop (velcro-style) — tool-free, re-attachable
Sizes	2" through 9" (50 mm – 225 mm)
Colours	Red, green, white, yellow, black, purple
Pack size	100 pcs / box for 4", 5", 6" discs (other sizes available)
Customisation	OEM available — diameter, grit, grain, backing, colour, and packaging
Samples	Free samples available; buyer covers shipping

Backing types: paper vs velvet

Both paper and velvet (cloth) backings are available. The choice affects how the disc handles, conforms to the surface, and resists tearing during use.

Property	Paper backing	Velvet / cloth backing
Flexibility	Moderate — suited to flat and near-flat surfaces	High — conforms to curves and contours
Tear resistance	Good with quality paper; can tear at disc edge under high load	Superior — fibrous structure resists edge tearing
Finish uniformity	Consistent scratch pattern on flat surfaces	More consistent on irregular or shaped surfaces
Best for	Flat panels, furniture, metalwork, auto body	Contoured surfaces, profile sanding, fine finishing
Cost	Lower — standard choice for production use	Higher — premium option for finishing-critical work

Safety and usage guidelines

Wear appropriate PPE

Always use safety glasses or a face shield and an appropriate dust mask or respirator. Fine abrasive dust — especially from MDF, silica-containing materials, and metal — poses a serious inhalation risk. Work in a ventilated area and use a sander with dust extraction where possible.

Select the right grit for the task

Starting too fine wastes time; starting too coarse leaves deep scratches that take multiple passes to remove. Begin coarse enough to address the surface condition, then progress through grits incrementally. Do not skip more than one grit step.

Check size and backing pad compatibility

Disc diameter must match your sander's backing pad. Using an undersized disc exposes the backing pad edge, causing rapid wear. Confirm the hook and loop systems are compatible — hook on the pad, loop on the disc (or vice versa, depending on the tool).

Avoid excessive pressure and heat

Let the abrasive do the work. Excessive downward pressure accelerates disc wear, glazes the abrasive, and generates heat that can scorch wood or warp thin metal. Use moderate, consistent pressure and keep the sander moving at all times.

Recognise when to replace a disc

Replace when the disc no longer cuts efficiently at normal pressure, when the abrasive surface appears shiny or glazed, or when the paper or cloth backing shows cracking or delamination. A worn disc worked harder generates heat without removing material effectively.

Frequently asked questions

What is the difference between hook-and-loop and PSA (adhesive) sanding discs?

Hook-and-loop discs attach via a Velcro-style system and can be removed and reattached multiple times without losing grip — making them ideal for work that requires frequent grit changes. PSA (pressure-sensitive adhesive) discs use a peel-and-stick adhesive backing and bond more firmly, but cannot be reattached once removed. Hook and loop is generally preferred for multi-stage sanding; PSA suits long runs on a single grit where disc changes are infrequent.

Can hook-and-loop sanding discs be used wet?

It depends on the backing material. Silicon carbide discs on a film or waterproof cloth backing can be used wet — wet sanding lubricates the surface, reduces heat, minimises dust, and produces a finer finish on paint, lacquer, and metal. Standard paper-backed aluminum oxide discs are generally not suitable for wet use as the paper backing can delaminate. Check the disc specification before wet sanding; look for discs explicitly labelled as wet/dry capable.

What do the different disc colours mean — red, green, white, yellow, black, purple?

Disc colour can indicate grain type, grit range, or backing material and varies by manufacturer. Common conventions: green often signals silicon carbide or coarse-grade discs; white typically indicates a stearated (anti-clog) fine-grit disc; black generally means silicon carbide for wet/dry use; purple may indicate a premium ceramic or zirconia abrasive. Red and yellow are used across general-purpose aluminum oxide ranges. Always read the product label rather than relying on colour alone, as there is no universal standard.

How do I choose the right disc size for my sander?

Match the disc diameter exactly to your sander's backing pad size. The most common sizes are 5" (125 mm) for standard random orbital sanders and 6" (150 mm) for larger orbital and dual-action sanders. Using a disc smaller than the pad exposes the pad edge, causing accelerated wear and uneven sanding. Using an oversized disc causes the edges to lift and catch. Check your sander's manual or the backing pad for the correct diameter and hole pattern.

What grit sanding disc should I use for bare wood before painting?

For bare wood before painting, the final sanding grit depends on the wood species and paint type. As a general rule: finish at 120# for coarser-grained woods (oak, ash) and at 150#–180# for finer-grained species (maple, cherry, MDF). Avoid going finer than 180# before water-based paint — very fine grits close the grain and can reduce paint adhesion. For primer, 120#–150# is sufficient. Sand with the grain on solid wood to avoid cross-grain scratches showing through the finish.

Are custom grit, size, and colour specifications available for bulk orders?

Yes. Custom specifications are available for OEM and trade buyers, including non-standard diameters (2" through 9"), specific grit values, choice of abrasive grain (aluminum oxide or silicon carbide), backing material (paper or velvet), disc colour, hole pattern, and packaging quantities. Free samples are available to verify quality before placing a full order — buyers cover the shipping cost. Contact the supplier directly to discuss minimum order quantities and lead times.

Request free samples or discuss a custom specification

OEM orders accepted. Buyer covers shipping on sample requests.