Fire Safe | DIN | 37.2mm  outside diameter (mm) – Inside diameters (mm)

Fire Safe PSI plug

37.2-6/7mm

Fire Safe PSI plug

37.2-16/17mm

Fire Safe PSI plug

37.2-10/11mm

Fire Safe PSI plug

37.2-12/13mm

Fire Safe PSI plug

37.2-15/16mm