P/S 870 Class B is a corrosion inhibitive sealant that acts as an effective barrier against common causes of corrosion on aluminum alloys and between dissimilar metals. It is a two-part, manganese dioxide cured polysulfide compound.
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WARNING: This product can expose you to chemicals including CHROMIUM (HEXAVALENT COMPOUNDS), TITANIUM DIOXIDE (AIRBORNE, UNBOUND PARTICLES OF RESPIRABLE SIZE) and TOLUENE which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Overview
This sealant has a service temperature range from -65°F (-54°C) to 250°F (121°C), with intermittent excursions up to 275°F (135°C). The cured sealant maintains elastomeric properties after limited exposure to both jet fuel and aviation gas. 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 with excellent adhesion to common aircraft substrates. The B-1/2 classification indicates an application life of 1/2 hours. The storage life of P/S 870 Class B is at least 9 months when stored at temperatures below 80°F (27°C) in original, unopened containers.
Features & Benefits
Low temperature flexibility at -65°F (-54°C) with no cracking, checking, or loss of adhesion
Resistance to hydrocarbons for enhanced durability
Flexibility with no cracks after bending 180 degrees over a 0.125 inch (3.18 mm) mandrel
Repairable to itself, excellent for both freshly cured and fuel-aged fillets
Fungus resistant and non-nutrient
Salt spray (fog) test for 670 hrs. (ASTM B117) shows no corrosion to base substrate or deterioration of sealant
Specifications
Color: Part A - Black, Part B - White, Mixed - Gray
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Product information provided "as is", and Boeing may add, change, discontinue or remove product information at any time. Product photos may not be exact match to product delivered. Seeterms & conditions.
