Volkswagen Polo Service & Repair Manual: Sprayable Sealant

Definition:

Sprayable Sealant -D 476 KD1 M2-, gray

Sprayable Sealant -D 476 KD2 M2-, black

Edition 08/2012

Product Description

Sprayable Sealant -D 476 KD1 M2-/- D 476 KD2 M2- is a spray-on sealant with a MS polymer base. It hardens into a rubber-elastic material with good abrasion resistance by absorbing atmospheric moisture. The film formation and hardening time depends on the humidity and temperature. The hardening time is also affected by the layer thickness. These times can be shortened by raising the temperature and humidity. Lower temperature and humidity levels delay the hardening.

Properties:

Sealant and weld sealant in one product

High stability

Can be sprayed and brushed

Can be painted over with conventional or water-based paints up to three days after applying

Adheres to many materials without glass-/paint primer

High initial strength

Can be spot welded

Silicone-free

No strong odor

Isocyanate-free

Quick drying

UV resistant

High resistance to aging

Sound-dampening properties

Application Instructions

Application

Sprayable Sealant -D 476 KD1 M2-/-D 476 KD2 M2- is used to seal welds in vehicle repair which have been sprayed at the factory, for example in the engine, luggage, and passenger compartment areas. Application tools (telescope spray gun or Pneumatic Cartridge Gun -VAG1761/1-) can be used to reach every desired weld. The material is used as a surface coating to repair or supplement PVC underbody coating or stone chip protection.

Pretreatment

The adhesion surfaces must be dry, free of oil, dust, grease and any other impurities. Cleaner FL is suitable to clean with.

Adhesion is improved if the contact surfaces are roughened with a sanding pad.

If the material is painted over after completely drying, then the painting preparatory work similar to the plastic preparatory work is to be followed.

Note Before starting to apply, it is necessary to read the safety measures and advice in the safety data sheet. Even for products which are not required to be labeled by law, the usual safety measures must be observed for chemical emissions.

Processing

Note Body areas and adhesion surfaces that are to be sealed must be insulated with a Two-Part Filler before applying the material. Applying Sprayable Sealant -D 476 KD1 M2-/-D 476 KD2 M2- from 310 mL aluminum cartridges can only be performed with the telescope spray gun or Pneumatic Cartridge Gun -VAG1761/1-. These application devices make is possible to apply the material as a strip of material (sealant bead) or to spray it on by using the dual-circuit air system. The material can be both sprayed and brushed on. This means that it is possible to imitate textured bonds and brushed structures.

The sealed seams can be painted over as early as 15 to 30 minutes.

The corresponding settings on the application devices enable the operator to imitate all textures specified by the manufacturer quickly and conveniently. The spraying distance can be used to vary the width and limit of the bond. Refer to the operating instructions for details on handling and setting the spray gun. It is recommended to remove any unhardened sealant from the tools using cleaner FL. Hardened material can only be removed mechanically.

Painting procedure

The Sprayable Sealant -D 476 KD1 M2-/-D 476 KD2 M2- can be painted over with one-part and two-part repair paint and even those containing alcohol as a solvent. Painting over quickly does not prevent complete hardening, it is, however, delayed. Do not wait longer than three days before painting. Before sealing or coating, phosphate and epoxy resin primers are particularly suitable for corrosion protection. It is imperative that the primers are dry before it is applied. If the body area to be painted after an accident repair is still to be coated with filler, filler primer or spray-on filler, these materials must be applied before sealing or coating with Sprayable Sealant -D 476 KD1 M2-/-D 476 KD2 M2-. If a filler still needs to be applied after sealing or coating with Sprayable Sealant -D 476 KD1 M2-/-D 476 KD2 M2-, then the sealant should be at least six hours old and a filler suitable for coating plastic is used.

Incompatibility

The Sprayable Sealant -D 476 KD1 M2-/-D 476 KD2 M2- is not compatible with fresh one-part polyurethane material. Polyurethane products must be solidified before they are sprayed with the sealant. The material should not be treated with aromatic solvent systems. As a result, it can partially dissolve or swell the sealant.

Technical Data

Color	Grey, black
Odor	Barely perceptible
Consistency	pasty
Density	approximately 1.6 g/cm³
Stability	Excellent
Hardening type	Moist hardening
Film formation type (standard climate conditions DIN 50014)	8 to 20 minutes, at +23 °C and a relative humidity of 50 %
Drying (standard climate conditions DIN 50014)	Approximately 4 mm/ 24 hours and 6 mm/ 48 hours at +23 °C with a relative humidity of 50 %
Shore A hardness	approximately 65
Painting compatibility	Can be painted after 20 minutes with one-part and two-part paints
Adhesive properties	Bare sheet metal, galvanized metal, EC paint, top coat paint, metallic paint, PVC underbody protective agent, GFK, PP/EPDM (testing recommended)
Chemical resistance	Resistant to light and weather, PVC softening agents and fuel (short-term)
Processing temperature	+5 °C to +35 °C
Application temperature	-40 °C to +90 °C (short-term, up to one hour at +130 °C)

Storage

The material is not vulnerable to frost.

The guaranteed shelf life is 12 months from the production date. Use no later than the date indicated on the label and store in original container at +10 °C to +25 °C.

Sprayable Sealant