P/S 870 Class A 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 A is a two-part, manganese dioxide
cured polysulfide compound. The uncured material is
suitable for application by brush in thickness up to 25
mils. 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 I specification test methods.
