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And just as a PS: I am in no way related to manufacturers or distrubutors of Norlock washers but after years of experience in designing oilwell downhole equipment withstanding extreme teperatures, pressure, vibration and shocks, these lock washers are the only ones that truly work.
I get it that this would not be "original" but I am not interested in using 1970s technology if I can do better today.
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