ISO 13263:2010 specifies a method for testing the impact resistance of fittings by dropping them on to a rigid surface. For a fitting with seal-retaining components, such as seal-retaining caps or rings, the method includes assessment of the watertightness of the fittings when the fixing elements show disturbance as a result of the test.

It is applicable to fittings made from thermoplastics materials intended to be used for buried and above-ground applications.