Flap Disc

Flap Discs are essential tools for metalworking, stainless steel processing, locksmithing, steel construction, workshops, construction and industry. They combine the properties of fiber discs and grinding discs in one single disc, offering an efficient and versatile solution for all common grinding applications with an angle grinder.

With a flap disc, you can grind, deburr, chamfer, process edges, smooth weld seams, clean and finish surfaces. Especially on stainless steel (INOX, VA, V2A) as well as on steel, iron and metal, they deliver excellent results.

We offer only the standard sizes of 115 mm and 125 mm, which fit all common angle grinders with a 22.23 mm bore.

Flap Discs by Abrasive Type

Abrasive Type	Description
Zirconia Alumina (blue)	For stainless steel & INOX Long service life – extremely durable on hard materials High material removal – ideal for weld seams and stainless steel structures Clean grinding pattern – prevents overheating and discoloration Universally applicable – in mechanical engineering, tank construction or railing fabrication
Aluminum Oxide (red/brown)	For steel, iron & metal Excellent price-performance ratio – perfect for everyday use Wide range of applications – from coarse grinding to deburring Flexible – for craftsmen, locksmiths, assembly companies and metalworking
Non-Woven Flap Discs	In addition to standard flap discs, we also offer non-woven flap discs designed specifically for fine surface finishing. Coarse: for heavy removal, e.g. removing rust or weld seams Medium: universal for roughening, cleaning and matt finishing Fine: for fine finishing, texturing and preparation for polishing or coating

Abrasive Type

Description

Zirconia Alumina (blue)

For stainless steel & INOX
Long service life – extremely durable on hard materials
High material removal – ideal for weld seams and stainless steel structures
Clean grinding pattern – prevents overheating and discoloration
Universally applicable – in mechanical engineering, tank construction or railing fabrication

Aluminum Oxide (red/brown)

For steel, iron & metal
Excellent price-performance ratio – perfect for everyday use
Wide range of applications – from coarse grinding to deburring
Flexible – for craftsmen, locksmiths, assembly companies and metalworking

Non-Woven Flap Discs

In addition to standard flap discs, we also offer non-woven flap discs designed specifically for fine surface finishing.

Coarse: for heavy removal, e.g. removing rust or weld seams
Medium: universal for roughening, cleaning and matt finishing
Fine: for fine finishing, texturing and preparation for polishing or coating

Grit Sizes and Grinding Performance

Grit	Application
K40	Coarse, high material removal
K60	Medium grit, universal use
K80	Fine, for surface preparation
K120	Very fine, for fine grinding and finishing

Areas of Application

Stainless steel / INOX / VA / V2A – clean grinding without rust risk
Steel & iron – universal use in locksmithing and metal fabrication
Metal in general – deburring, chamfering, cleaning
Wood – processable with aluminum oxide discs
Weld seams – fast and even smoothing
Surface finishing – with non-woven flap discs for matting and fine grinding

Safety When Working with Flap Discs

Safety glasses to protect from sparks
Gloves for a secure grip
Hearing protection for extended work
Dust mask for heavy grinding sessions

Conclusion – Which Flap Discs Are the Right Choice?

Stainless steel, INOX, VA, V2A	Zirconia alumina (blue) – durable and precise
Steel, iron, metal & wood	Aluminum oxide (red/brown) – cost-effective & universal
Surface finish	Non-woven flap discs – available in coarse, medium & fine
Available sizes	115 mm and 125 mm only, suitable for all angle grinders with 22.23 mm bore

Whether K40, K60, K80 or K120 grit – you’ll find the perfect flap discs and non-woven flap discs for stainless steel, INOX, steel, metal and wood.