The attached Iwata airbrush fitting and 1/4 in compressor fitting use O-rings which form leak-proof seals when attached.
Iwata USA Team Iwata Pinback Pin, Black & Silver Enamel-Style
PRISMATIC POWDERS® RAL 4010 (1 LB / RAL-4010)
Vibrant Hose Cutter 2989; Hose Cutting Shears -03AN to -20AN braided/non-braided
3/4" ID 3.3/10Ft Heat/Fire Reflective Braided Hose Sleeve Thermo Shield Black