PR-1440 Class B is an aircraft integral fuel tank sealant designed for fillet sealing of fuel tanks and other airframe sealing applications. It has a service temperature range of -65°F (-54°C) to 250°F (121°C), with intermittent excursions up to 275°F (135°C).
PR-1440 Class B is a two-part, manganese dioxide cured polysulfide compound. The uncured material is a low sag, thixotropic paste suitable for application by extrusion gun or spatula. It cures at room temperature to form a flexible sealant with excellent adhesion to common aircraft substrates and retains excellent elastomeric properties after prolonged exposure to jet fuel and aviation gasoline (avgas).
B-2 properties
Application life: 2 hours
Tack-free time: less than 36 hours
Full cure: 48 hours
Mix ratio (Part A : Part B): 10 : 100 by weight
Colour: dark grey (mixed)
Specification: AMS-S-8802 Type 2, Class B-2
| General | |
|---|---|
| Packing | 2.5 OZ or 6 OZ / 100 ML or 1 Pint or 500 ML or 1 QT |
| Uncategorized | |
| Specifications | Manufacturer Spec or AMS-S-8802 |