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PR-1995 Class B Primerless, Two-part Firewall Sealant. PPG Aerospace® Sealants
PR-1995 Class B is a primerless two-part, firewall sealant based on silicone polymer. This material is designed for sealing firewall structures against the passage of air and vapors. The cured compound has a service temperature from -65F (-54°C) to 400°F (204°C) and will withstand flash temperatures up to 3500°F (1927°C). PR-1995 Class B will remain an effective sealant after long-term exposure to phosphate ester based hydraulic fluids.
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