P/S 872 Class B Conductive Lightning Strike Sealant

PPG P/S 872 Class B sealant is a conductive lightning strike and corrosion inhibitive product with a service range from -65°F to 250°F, with short excursions up to 275°F. This two-part, aluminum-filled polysulfide compound maintains electrical continuity and resists corrosion on aluminum alloys.

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Product Details

PPG P/S 872 Class B is a conductive lightning strike, 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). The cured sealant maintains electrical continuity in a highly torqued fay surface for certain aircraft applications. The material acts as an effective barrier against the common causes of corrosion on aluminum alloys or between dissimilar metals. The cured material is resistant to intermittent exposures to both jet fuel and aviation gas.

P/S 872 Class B is a two-part, aluminum-filled, 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.

P/S 872 Class B is also available in preformed parts using PPG's proprietary Ambient Reactive Extrusion (PPG ARE™) additive printing technology.