Some Information about Plumbing and Plumbing tools
There are two basic types of plungers: toilet and sink. A sink plunger, pictured at the right in the image above, has a flat rim designed to fit over a sink, bathtub, shower, or similar opening to form a seal. A toilet plunger, pictured at the left in the image above, has a flange desined to fit into the bottom of a flush toilet bowl, with the flange entering into the exit pipe, forming a seal. The flange of a toilet plunger can be flipped up inside the plunger in order to use it as a sink plunger. If one is going to have only one plunger on hand, a toilet plunger is more versatile.
Some Plumbing DOs and DON'Ts
DO - When plunging your bathroom sink or bath tub use a cloth
and plug up the overflow and hold tight. It's a good idea to
plunge your drains before they stop up.
DO - Remove the stoppers and clean down pipe where stopper
connects.
DO - When finished plunging, fill wash bowl until it runs int
overflow. If you have a small type spring brush, use to clean
overflow.