Grunge Armor | 6-Pack | Dust Cap, Fits Male ISO/Pioneer Style Hydraulic Quick disconnects Like 8010-4, 6602-8-10, and Others. Blue Molded Cap with Retention Ring Keeps Cap Attached to Hose

Dust plug locks into fitting well and seems to seal properly. It would be good if the male and female dust plugs would mate securely together when not needed; I feel that they will come apart very easily.

Good