Usage	Used for scuffing, fine sanding, matt finishing, and preparation for polishing in damp sanding applications
Industries	Automotive refinishing, marine, woodworking, aerospace, composite manufacturing
Professions	Automotive bodyshop technicians, painters, boat builders, furniture finishers, composite fabricators
Surface/Material	Conventional and new lacquer, old lacquer, gelcoat polyester, plastics, acrylic glass, composites
Environment	Bodyshops, workshops, marine yards, woodworking shops, aerospace finishing facilities
Special Features	Damp sanding technology, pressure-equalising foam backing, washable and waterproof, resistant to clogging and silicon remover
Grit/Grade	Available in multiple fine grit options — ideal for polishing preparation and ultra-smooth surface finishing

A perfect finish for varnishes and mineral materials

Whether it's scuffing, fine sanding or preparation for polishing – the improved technology of 7940 siaair is the key to a perfect finish in damp sanding applications.

Advantages

• Low clogging thanks to damp sanding
• High stock removal rates and excellent finish
• Highly adaptable to contours, curves and profiles
• Pressure-equalising foam gives perfect surface finish
• Waterproof and washable
• Resistant to silicon remover

Applications

• Matt finishing of conventional old and new varnishes as well as composite materials
• Fine sanding of primer filler in hard-to-reach areas
• Preparation for polishing on high-gloss surfaces

Application

• Colour
• Lacquer
• Old lacquer
• Gelcoat polyester
• Plastics
• Acrylic glass
• Composite

Profile

Grit type: Aluminium oxide

Backing: Knitted fabric with foam backing

Coating: Special process

Bonding: Resin over resin

View Data Sheet (PDF)

Variant	Part Number
P240	5163.3687.0240
P360	5163.3687.0360
P500	5163.3687.0500
P600	5163.3687.0600
P800	5163.3687.0800
P1000	5163.3687.1000
P1500	5163.3687.1500
P2000	5163.3687.2000
P3000	5163.3687.3000
P4000	5163.3687.4000