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4. Inspect the main seal (A) and vacuum check port O-ring (B) for cuts or other damage. Remove the vacuum
check port cap (C) to expose the O-ring. Clean the seal and O-ring and opposing contact surfaces using a
slightly dampened, lint-free cloth. Replace the seal and O-ring if damaged or every year. The SportDiver
Spare O-ring Set (Item SL40010) includes the main seal and vacuum check port O-ring.
5. Put a small dab of silicone O-ring on your fingertip. Apply a thin film of silicone lube to the exposed surface
of the main O-ring and vacuum check port O-ring. Use your fingertip to evenly spread the lube over the
exposed O-ring surfaces. Only a thin film of lube is necessary.
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