What's that strange orange stuff on all your bolts you may ask...Torque Seal is an anti-sabotage lacquer used to mark a line (the torque stripe) across the heads of bolts and other threaded assemblies. If the assembly loosens, it will be easy to tell because the once straight line of Torque Seal across the fastener will be displaced. It has an additional and, during the build process, a more important role. It is a great way of indicating when a fastener or part has been final torqued. This way, if you tend to rough assemble a lot of parts on your airplane, you will be much less likely to fly your airplane without something final torqued if you torque stripe the final installed parts. When it comes time for a DAR to inspect your
airplane, he'll be glad to see torque striping on at least the critical
fasteners. The Standard Aircraft Handbook recommends that torque
striping be done on the head of bolts, if possible. Sometimes this part
is not accessible or visible, and so in that case, a stripe across the
nut is acceptable.
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| Torque Seal used on the aileron bellcrank assembly |
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| Tubes of Torque Seal (available from Aircraft Spruce) |
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