1.decrease clearances by reducing machining tolerances.
2.Use back-up devices. (See Section VI,Parbak Back-up Rings,for information on Parker Parbak anti-extrusion devices.)
3.Check O-ring material compatibility with system fluid.
4.Increase rigidity of metal components.
5.Replace current O-ring with a harder O-ring
6.Break sharp edges of gland to a minimum radius 0.005 inches.
7.Insure installation of proper size O-rings.
8.Use altermative seal shape, for example, in some long stroke piston or rod applications, the parker T-seal, with its built-in back-up rings,may prevent extrusion and spiral failure.