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The more tightly sealed the VCI packaging, the better the volatile corrosion protection. Seals may be closed with zip-ties, packaging tape, or staples. A good closure method is to fold over the film and either tape or staple the area shut. When stapling, seal over the holes made by the staples with tape. The best seal is always a heat seal, but it is not necessary. Also, it is unnecessary to extract air from the enclosure before sealing to prevent future airflow. Water must be prevented from penetrating the packaging. Be careful to fold over the film and close VCI gusset bags so water cannot easily pool and enter the enclosure.