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Metric 4AN Adapters

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  • Speedflow 350 Series -4 to Washer Seal Adapters
    Speedflow manufactures a large range of adapters to suit almost all threads. These are the most universal 200 series fittings we have, they are found in brake calipers, blocks, manifolds etc. They use an alloy crush washer to seal against a machined flat surface. Below is a list of -4 adapter..