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Identify the O-Ring That Needs To Be Replaced
© 2009 David Muhlestein Licensed to About.com
Identify an o-ring that needs to be replaced by looking for cracks, warping or frayed edges. Common areas that need replacing are on the bolt, the hammer and on tanks.
Take your pick and place it under the edge of the worn o-ring. If you don't have a pick, you can use tweezers, a nail or some other small, pointed device.