Hey everyone,

One of the simplest yet most important things you can do to prevent leaks is proper O-ring maintenance on your Dome ports. Even a single hair, a tiny grain of sand, dried salt, or a damaged O-ring can compromise the seal and cause a leak in your housing.

That’s why we recommend following a quick, consistent routine for your Salted Line waterproof camera housings bundle with 6-inch or 8-inch dome ports.

Here’s the exact process that experienced underwater photographers follow every time.

What You’ll Need

• The original Sea Frogs / Salted Line Silicone grease that came with your housing
  
• The O-ring removal tool (also included)
• Soft paper tissues
• A clean workspace
• Spare O-rings (in case your O-rings is damaged)

 

Step-by-Step Maintenance

1. For a brand-new dome port

New dome ports usually come already assembled with the extension ring attached. They typically arrive with a thin layer of the original silicone grease already applied on the O-rings.

Nevertheless, we recommend checking this yourself by gently running your finger along the O-rings. If the grease is missing or feels insufficient, apply a thin, even layer of the original SeaFrogs / Salted Line silicone grease as described later in this guide.

2. Routine maintenance before every dive day

Carefully inspect both O-rings: the main one (Photo 1) on the extension ring and the second one (Photo 2) between the extension ring and the dome port.

 

 

 

If the O-rings are clean, gently wipe away the old grease with a soft paper tissue (Photo 3). Then apply a very thin, even layer of the original silicone grease using your fingertip. Remember - less is more. Too much grease can actually cause leaks.

 

 

If you see any sand or debris, remove the O-ring carefully with the removal tool (Photo 4), clean both the O-ring (do not stretch it) and the groove thoroughly, then reinstall the O-ring flat in the groove and apply fresh grease before reassembling the port.

 

 

 

If you detached the extension ring from the dome port, reattach it securely before reassembling the port.

3. Reassemble and test

Attach the dome port to your Salted Line waterproof camera housing. Make sure everything sits correctly without any twists. Always perform the classic bucket test: submerge the fully assembled housing in a fresh water tank, press all controls, and after that check if the leak detection sensor has been triggered and also visually check if water has entered your camera housing. This quick check gives you peace of mind before you enter the ocean.

 

 

Pro Tips for Long-Term Reliability

• Always use only the original Sea Frogs / Salted Line Silicone grease. Other greases can damage the O-rings or make the controls sticky.
• Never stretch the O-ring. It can damage the rubber, create micro-cracks, and eventually lead to leaks.
• After every dive, rinse the entire housing and dome port thoroughly in fresh water.
• In very sandy or shore-break conditions, pay special attention to the O-ring between the Extension ring and Dome port, as it tends to collect more debris.

• Replace the O-ring immediately if it is damaged, discolored, or shows any signs of wear. For preventive maintenance, we recommend replacing the O-rings at least once a year.

Taking just a few minutes to properly maintain your O-rings can make a huge difference. It keeps your Salted Line waterproof camera housing reliable for hundreds of dives and protects your valuable camera gear.

For the full step-by-step guide, check out our video on YouTube

Have questions about maintaining your specific Salted Line dome port setup or need the right grease and spare parts? Feel free to email us at support@saltedline.com or message us on social media. We’re always happy to help.

Stay safe, stay dry, and happy shooting!

- The Salted Line Team

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