Pulsar Caseback O-Rings – P2/P3 size.
These new, high quality neoprene gaskets will fit your Pulsar P2, P3 -Date II, P3 -Date Command, all Hamilton QEDs(magnet set) or the Omega TCI or TC II (magnet set)Led watches. If you don't know when your case back gasket was last changed, you are risking damaging it through water infiltration. For $10.50 you can have a fresh caseback ring and enough silicone watch case grease to last a lifetime. Well, ok, a long time!