All Repair Compounds AF800 Series Speed Patch™ AF300 Series Patch Kits AF400 Series Repair Systems AF201 Duct Joint Repair Kit AKROFIREGUARD REPAIR COMPOUNDS AkroFireguard. We’ve earned our wings with the airline industry. Akro manufacturers the Speed Patch®, the #1 choice of airlines worldwide for repair of cargo liners. We’ve developed a reputation for solutions-oriented products, exceptional reliability and fast, on time delivery. The best testament of this is our loyal customer base and customer requests for Akro Fireguard to develop solutions in other areas of need. Today, you’ll find numerous Akro Fireguard products installed in aircraft all over the world.