It appears to just be another type of O-ring. I think it's because they have the shape of an inverted bicycle tyre, with a u-shaped ridge dipping in all around the outside.
Pipe joint compound or Teflon tape
Mission CAP or IPS plug if there is a female fitting
what are some pipe fitting abb
AN stands for Army Navy. The AN fittings have a 37 degree conical end which is what makes the seal.
The fitting allowance is the difference: (pipe end to fitting center measurement) minus (pipe end to end measurement). It is the amount of length the fitting adds to the end of the pipe (to get the center of the turn).
Pipe grooved at end of pipe with grooving machine. Butt grooved pipe or fitting together and slip rubber seal onto end of each grooved joint, apply light coating of grease made for grooved piping on rubber seal. Coat split coupling for joint with grease also and put coupling around joint and clamp together tightly.
When soft copper tubing is used the end is flared so that it can seal against the fittings. A flaring tool is used to spread the end of the tubing so that it looks like a small funnel. When you tighten the nut onto a fitting it compresses the copper against the flare on the fitting and makes a seal. It is a dry seal, no pipe dope should be used on a flare fitting. This is almost always on a gas line of some sort, air, natural gas, propane or some other gas. It can be used for liquids, but generally isn't.
measure the length of the fitting first. Then insert pipe into fitting and mark a line on pipe. measure that bit of pipe. deduct off the length of fitting and half it to give you your x dimension
Adam Fitting goes by Pipe.
You can't. There is no fitting to do this. Galvanized has to be threaded.
Using fittings to change centerline of pipe.
To join lengths of pipe and to route it where it needs to go.