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2. Hardness test of the working surface of the floating oil seal: test the hardness of the working surface of the sealing ring to ensure that the working surface has sufficient hardness.
3. Floating oil seal air pressure test: The air pressure test simulates the actual working environment of the sealing ring. Under the condition of ensuring the atmospheric pressure of the floating sliding seal, place it in the water and observe whether it leaks to determine whether the sealing surface is qualified. The atmospheric pressure is 3 times the actual pressure.
4. Floating oil seal dynamic sealing performance test and reliability life test: The floating oil seal dynamic sealing performance test and reliability life test simulate the actual working conditions of the track-type bulldozer rollers to ensure the pressure of the floating sliding sealing surface, and the strengthening ratio is an experiment 4-5 times of operating conditions.
