WEICON Black-Seal Special Silicone

Overview

WEICON Black-Seal Special Silicone is a black, high-temperature-resistant (+280°C, briefly +300°C) moisture-curing silicone sealant, free of solvents, strong, oil-resistant, grease-resistant, pressure-resistant, resistant to ageing and extremely elastic with a breaking elongation of approximately 500%. It is suitable for bonding and sealing in applications where particularly high oil and grease resistance is required, such as gearbox, valve and casing covers, oil sumps, water pumps, gears and axles, flanges, tanks and containers. Complies with MIL-A-46106B Group III Type 1.

Specifications

Color

Black

Strength

High

Base Type

1-component polysiloxane (acetate)

Viscosity

Pasty

Cure Type

Moisture-curing

Service Temperature

-40°C to +280°C, briefly +300°C (approx. 2h)

Fixture Time

Skin-over time 7 minutes

Full Cure Time

Curing speed 2-3mm in first 24 hours

Certifications

MIL-A-46106B Group III Type 1

Technical Information

• Tensile strength 2.2 N/mm² (ISO 37)
• Elongation at break 500% (ISO 37 S3A)
• Shore A hardness 30±5

Typical Applications

• Sealing gearbox, valve and casing covers
• Oil sump and water pump gasket sealing
• Flange, tank and container sealing in oil/grease-exposed areas

Industries

Technical Documents