Properly Lubricating a Rubber “O” Rings in an Underwater or All Weather Housing
Lubricating the user serviceable “O” rings in underwater cameras or in plastic underwater housings for digital or film cameras is essential to ensure a watertight seal and protect your equipment. Here’s a step-by-step guide for novices:
Step 1: Gather Your Supplies
You will need:
- The rubber “O” ring specific to your housing, if your “O” is damaged.
- Silicone grease – High Quality Plumbers ‘grease (not petroleum-based)
- Rubbing alcohol
- A soft toothbrush
- A clean, lint-free cloth
Step 2: Remove and Inspect the “O” Ring
Carefully open the underwater housing and locate the “O” ring. Gently remove it using your fingers, finger nails, and if necessary, very carefully, a wooden toothpick. Be cautious not to stretch or damage it. Inspect the “O” ring closely for any nicks, abrasions, or rub marks. If you find any, replace the “O” ring immediately.
Step 3: Clean the “O” Ring
Pour some rubbing alcohol onto a clean, lint-free cloth and wipe down the “O” ring thoroughly. This will remove any dirt, oils, or debris. Ensure the “O” ring is completely dry before proceeding.
Step 4: Clean the Groove
Using a soft toothbrush, carefully clean the groove where the “O” ring sits in the housing. This helps remove any trapped particles that could prevent a proper seal. Look closely to ensure there is no debris left in the grooves.
Step 5: Apply Silicone Grease
Put a small amount of silicone grease on your fingertips. Hold the “O” ring with one hand and use the other hand to pull the “O” ring through your greased fingers. This method ensures an even, thin layer of lubricant. Avoid over-applying; the goal is to make the rubber slick, not greasy. Do not apply lubricant directly to the groove itself.
Step 6: Replace the “O” Ring
Inspect the “O” ring once more to ensure it is evenly lubricated and free of debris. Carefully place it back into the groove in the housing, making sure it is properly seated without twists or bunching.
Step 7: Final Check
Before closing the housing, conduct a final check for any dust, hairs, or debris on the “O” ring and the housing’s sealing surfaces. Close the housing carefully, ensuring the “O” ring remains in place and forms a tight seal.
Tips:
- Use the silicone grease recommended by the housing manufacturer. Though I have successfully used high quality plumbers’ grease on all Nikonos cameras and lenses I serviced and pressure checked.
- Regularly inspect the “O” ring to ensure the housing remains watertight.
- I recommend removing the “O” before storing the housing to prevent flat spots.
Following these steps will help prevent water damage to your camera, ensuring reliable underwater performance.
Gray
USCamera.com
Lube Canon AW-WP “O” Rings
