PPG A855 Fine Stopper (0,8kg)

PPG Fine Stopper A855 (0,8kg)

PPG Fine Stopper A855 is a 2-component fine finishing stopper developed for the quick repair of minor surface defects. It is ideal for small scratches, pinholes, minor filling work and the levelling of rough or uneven surfaces before priming and refinishing.

A855 is easy to apply and fast to sand, making it a practical solution for fine repair work in professional bodyshops. When properly applied to a correctly prepared substrate, it helps create a smooth and even surface for subsequent primer surfacer and paint system application.

The product can be used on several substrates including existing paintwork, bare steel, cast iron, galvanised steel, aluminium and fibreglass, provided the recommended preparation guidelines are followed.

PPG Fine Stopper A855 is intended for workshops where fast repair, good sanding performance and reliable surface preparation are essential before applying suitable 2K primer surfacers.

Main system components

• A855 Fine Stopper
• I63PTRM020 hardener (20 ml tube)

For professional use only.

Mixing ratio

Hardener addition by weight:

• At 5–10°C: 2.5–3.0%
• At 10–20°C: 2.0–2.5%
• At 20–30°C: 1.5–2.0%

Mix the hardener thoroughly into the filler until a homogeneous paste is obtained.

Pot life

• At 5–10°C: 8–12 minutes
• At 10–20°C: 7–10 minutes
• At 20–30°C: 5–10 minutes

Surface preparation

• Paintwork: P220–P240 dry sanding
• Bare steel and cast iron: P80–P120
• Galvanised steel: P120
• Aluminium: P120–P240
• Fibreglass / GRP: P220–P240
• Plastics: not suitable for direct application

In all cases, use the appropriate PPG cleaner and ensure the substrate is thoroughly cleaned and dried before and after preparation.

Application

Apply with a suitable knife or spreader.

Drying times

Note: on galvanised or zinc-plated panels, drying time should be extended by 15–20 minutes.

Sanding

Dry sanding: P120, followed by P180, followed by P240

Wet sanding is not recommended.

Overcoating

Overcoating time at 20°C: 40 minutes

Overcoat with: any suitable PPG 2K surfacer

Direct overcoating with topcoat colour is not recommended. Always use a suitable primer surfacer first.

Important notes / limitations

• Always follow the recommended hardener ratio.
• Do not try to accelerate drying by adding extra hardener, as this may cause major defects in the subsequent paint film.
• Do not allow water to come into contact with 2K polyester fillers, so always dry sand.
• Once hardener has been mixed into the filler, do not return it to the original container.
• Store in a cool, dry place away from direct sunlight.
• After use, ensure partly used containers are tightly sealed.

VOC and safety

• EU VOC limit value (ready for use): max. 250 g/l
• VOC content of the product in ready-for-use form: max. 250 g/l
• Use: for professional use only
• Safety: always refer to the Safety Data Sheet for full health and safety information