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The red washer fits on the end of the pump hose to create a tight seal when connecting the hose to the board valve.
The red washer fits on the end of the pump hose to create a tight seal when connecting the hose to the board valve.
What I need to use the pump efficiently
Most of the other washers are too soft and deform. Particular problem on an otherwise superb Whaleshark pump. These are nice and firm, and they have a U shaped cross section where the groove fits into a raised section on the connector. So it keeps its shape, seals perfectly, and doesn't move. I'd tried several types I had lying around and this was the only one which didn't let some air out. Thank you!
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