Sia 5163.3687.4000 – 7940 Siaair 6" Sanding Disc, 4000 Grit (10/Box)

Description

Sia 5163.3687.4000 Siaair 7940 6 Inch Disc, 4000 Grit

The Sia 5163.3687.4000 is a 6 inch (150 mm) Siaair 7940 foam sanding disc in 4000 grit, sold 10 discs per box. 4000 grit is the finest grit in the Siaair 7940 range. The disc combines aluminium oxide abrasive with a knitted fabric and a pressure-equalising foam backing, so it follows contours, curves and profiles and leaves a low scratch depth.

Features and Specifications

• Line: Sia 7940 Siaair, siafast hook and loop disc
• Size: 6 inch (150 mm)
• Grit: 4000
• Grain: aluminium oxide, resin over resin bond
• Backing: knitted fabric with pressure-equalising foam
• Use: designed for wet or damp sanding; waterproof and washable
• Machines: random orbital sanders and hand sanding
• Pack: 10 discs per box

Where 4000 Grit Fits

Use 4000 as the last step before polishing high-gloss surfaces. It follows 3000 and leaves a very fine, uniform haze that a polishing compound removes quickly. The Siaair range runs from 240 to 4000, so one system covers the whole job from primer to polish.

Who Uses It

Automotive refinishers, aerospace and composite shops, boat builders working with gelcoat and solid surface fabricators use the Sia 5163.3687.4000 for the last step before polishing. Sia lists it for lacquers, paints, plastics, acrylic glass, gelcoat and composites. It is not suited to glass, ceramic lacquers or stone.

Tips for Best Results

Keep the disc and the surface damp, as Sia recommends, and rinse the disc when slurry builds up. Use light, even pressure and keep the sander flat so the foam can spread the load. Wash the disc out after the job and let it dry flat; Siaair discs are washable and can be used many times.

Related Products

• Sia abrasives at IBEX
• All 6 inch hook and loop discs
• Sia 5163.3687.3000 Siaair 6 inch disc, 3000 grit
• Sia 5163.3687.2000 Siaair 6 inch disc, 2000 grit

Order the Sia 5163.3687.4000 from IBEX

IBEX stocks this item in Calgary and ships from Calgary. For larger quantities, call or email for a quote.