Pressure Power Washer O-Rings Replacement for 1/4 Inch, 3/8 Inch, M22 Quick by | Jul 21, 2026Contains 20 pieces O-rings designed for 1/4’’ and M22 quick connect fitting. O-rings designed for 1/4’’, M22, 3/8’’ quick connect fitting. O-Ring – Power Pressure Washer O-Rings for 1/4″ Quick Coupler.