Aluminum cam lock fittings can be used for oil tankers, but they must be strictly matched with the working conditions. The following are key considerations:

■Available scenarios
1. Transport conventional oil products
Suitable for non-polar oils such as gasoline, diesel, and lubricants, the corrosion resistance of aluminum alloys (such as 6061-T6) can meet the requirements.
Avoid transporting strongly polar solvents (such as ethanol gasoline), acidic crude oil, or high sulfur oil products, as aluminum is prone to intergranular corrosion.
2. Lightweight requirements
Aluminum fittings are about 60% lighter than stainless steel and are suitable for oil tankers that are sensitive to their own weight, such as small delivery vehicles and airport refueling trucks.

■Limitations
1. Prohibit contact with compressed gas
The cam lock structure is not suitable for pressurized gases such as liquefied petroleum gas (LPG) and compressed natural gas (CNG), which may cause fitting failure.
2. Key to gasket selection
Fluororubber (FKM) gaskets must be used: Nitrile rubber (NBR) is prone to swelling and failure when exposed to ethanol gasoline, while FKM has better oil resistance.
Do not use ordinary rubber gaskets, otherwise oil penetration may cause leakage.
3. Anti static requirements
A jumper wire needs to be installed between the aluminum fitting and the metal pipeline of the oil tanker to eliminate the risk of static electricity accumulation.
Avoid using aluminum fittings with plastic coating (such as anodized versions) as it may block the path of static electricity discharge.

■Maintenance focus
1. Regular sealing inspection
Manual testing before and after each oil loading and unloading: After locking the cam, gently pull the male and female fittings to confirm that there is no looseness or oil leakage.
Replace the gasket immediately if it is found to be hardened or deformed (common in high temperature seasons).
2. Anti violence measures
Aluminum has a low hardness (about HB 95), and rough tapping on the cam handle may cause deformation and locking.
Do not use brute force opening and closing when freezing, thaw first before operation.
3. Suggestions for alternative solutions
High risk medium selection: stainless steel
When transporting aviation fuel, sulfur-containing crude oil, or chemical solvents, 316 stainless steel fittings are preferred for more reliable corrosion resistance.