Form

This specification covers three classes of fuel-resistant polysulfide (T) sealing compound with high strength and temperature characteristics, supplied as a two-component system which cures at room temperatures.

Application

This sealing compound has been used typically in sealing aircraft integral fuel tanks, fuel tank fillets and faying surfaces, pressure barriers and moldline surfaces, but usage is not limited to such applications. The sealing compound is resistant to jet fuels and is capable of withstanding long-term exposure -65 to 250 °F (-54 to + 121 °C), with short-term exposure (approximately 6 hours) to 360 °F (182 °C).

Notation

AMS3100 adhesion promoter should be applied prior to sealant.

Classification

Sealing compounds covered by this specification are classified by method of application and application times as follows:

Class A - Suitable for application by brushing, injecting,, or spraying. Available in the following application times in hours:

A-1/2

A-2

A-4

Class B - Suitable for application by extrusion gun or spatula. Available in the following application times in hours:

B-1/2

B-2

B-4

Class C - Suitable for extrusion gun, spatula, brush, or roller. Available in the following application times in hours:

Notation: ( ) Assembly time in hours

C-8(24)

C-12(48)

C-48(168)

C-96(336)

All supplied material must conform to both class and application time of the specific sealing compound that has been ordered.

Precautions

Safety - Hazardous Materials

Shall be in accordance with AS5502 (2).