Drip, drip, drip: Understanding O-rings in the repair process
One drip per minute amounts to about a liter (quart) of water in 3 days. If that's the leak rate for an O-ring on a submersible pump, that's a big problem. O-rings are common for static seals on submersible pumps. An understanding of what makes a good static seal, and what causes them to leak, is obviously important for pump repair technicians.