P/S 870 Class B is a corrosion inhibitive sealant. It
has a service temperature range from -65°F (-54°C)
to 250°F (121°C), with intermittent excursions up to
275°F (135°C). This material acts as an effective
barrier against the common causes of corrosion on
aluminum alloys or between dissimilar metals. The
cured sealant maintains elastomeric properties after
limited exposure to both jet fuel and aviation gas.
P/S 870 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 resilient sealant having excellent
adhesion to common aircraft substrates.
The following tests are in accordance with MILPRF-81733
Type II specification test methods.
