This spare O-ring fits most of the Ports for the Salted Line Housing:
- Standard Flat Port
- 4" Dome Port
- 6" Dome Port
- Short Macro Ports
- Long Macro Ports
This O-Rng DOES NOT fit only the special Macro Port for Sony E55-210mm lens.
To ensure the secure sealing, you are HIGHLY RECOMMENDED to clean the O-ring and the O-ring tunnel every time before and after your underwater camera use.