Pulled the intake to diagnose #5 and 6 injector codes, and the intake seals appear to be orange silicone and reusable. Anyone know if these need to be replaced if the intake manifold is removed?

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2012 xDrive35d
2001 BMW X5 3.0i 5MT
and two 1987 Corvettes - Callaway Twin Turbo and Guldstrand Grand Sport 80
Block Tester