Flamemaster Chemseal CS247 B-1/2 Windshield / Canopy Sealant - Quart Kit

Flamemaster Chemseal CS 247 B-1/2 is a black, two-part manganese-dioxide-cured polysulfide sealant for setting or repairing aircraft windshields, canopies and other transparencies made from glass, acrylic or polycarbonate. It is supplied as a quart kit.

The uncured material is thixotropic (low sag) for application by extrusion gun or spatula. Flamemaster identifies CS 247 Class B for use with transparencies installed in composite or metal frames. For acrylic and polycarbonate substrates, Flamemaster recommends use of an adhesion promoter such as CS 900.

• Manufacturer part number: CS247B1/2 QT
• Class: B-1/2
• Colour: black
• Typical minimum application time: 30 minutes at 25 °C and 50% relative humidity
• Typical tack-free time: less than 4 hours at 25 °C and 50% relative humidity
• Typical cure time to Shore A 30: less than 10 hours at 25 °C and 50% relative humidity
• Service temperature range after cure: -54 °C to +121 °C
• Designed to resist crazing on acrylic and polycarbonate, with UV resistance

CS 247 B-1/2 and B-2 are supplied to a Flamemaster specification based on AMS3333 Type II, high-peel-strength material. Refer to the applicable maintenance data, technical data sheet and safety data sheet before use.

Manufacturer documentation: CS 247 Class B Technical Data Sheet and CS 247 Part B Class B Safety Data Sheet.