Bluesil RTV 3428 A (20 kg)

Product description

BLUESIL® RTV 3428 A is the main component of an addition-curing two-component silicone rubber system that has been specially developed for applications with high thermal and mechanical stress. When combined with the appropriate catalyst, it produces an elastomeric molding material with very high temperature resistance, excellent tear resistance, and a long service life—even under continuous stress. The 20 kg container size is ideal for industrial production of technical molded parts, prototypes, or series molds with complex geometries. RTV 3428 A offers excellent flow properties, is easy to demold, and is suitable for a wide variety of materials, including resins, plaster, and metals.

product features

• A-component for RTV 3428 system (addition-curing)

• Color: translucent

• Shore hardness A (end product): approx. 28

• Mixing ratio with catalyst: 10:1 (by weight or volume)

• Temperature resistant: –48 °F to 452 °F, briefly up to 572 °F

• High tear and tear resistance

• Shrink-free and dimensionally stable

• Good flowability – suitable for intricate details

• Vacuum processing possible

• 20 kg container for large-volume mold production

Suitable materials

• Polyurethane, epoxy, and polyester resins

• Plaster, wax, soap

• Originals made of metal, wood, clay, or plastic

• Use with release agent recommended for incompatible substrates

Typical areas of application

• Technical casting molds with high thermal stress

• Series molds for industry and prototype construction

• Molding of mechanical components

• Tool manufacturing for composite processing

• Molds for metals and high-temperature materials

• Molds with complex geometry or undercuts

Processing instructions

1. Homogenize RTV 3428 A well before mixing.

2. Mix with the appropriate B component in a ratio of 10:1.

3. Stir the mixture thoroughly and apply without creating bubbles.

4. Vacuum venting recommended for high precision

5. Curing at room temperature or accelerated with heat

6. Demolding after complete curing

7. Do not use with substances containing sulfur, amines, or tin.

8. Storage: sealed airtight, at 5–30 °C