This male-male serial cable forms a watertight seal when connected
 
1125-00W
D09 Male to Male Waterproof Custom build at $75.00 + $0.60 per foot.
Some custom products may not be REACH compliant.
Technical Documents
This male-male DB9 serial cable is perfect for marine or outdoor applications where a rugged connector is required. Wired straight through, and available in custom lengths.