L dimension of taper screw type is reference dimensions after tightening screw.
Vacuum Pressure (kPa)
Screw Diameter R
Opposite Side H (mm)
Dimensions P (mm)
Compatible Tube Outer Diameter D (mm)
Dimensions C (mm)
Dimensions E (mm)
Metal main body, guide ring, brass + nickel plated
Resin main body / Poly butylene terephthalate (PBT)PBT(UL94V-0)
Open ring / Poly acetal (POM)
Locking nails, stainless steel
Tube/polyurethane, nylon, etc.
ELASTIC SLEEVE /O RING / NITRILE (NBR)
After fastening the screw at the first place it broke easily. In the packing that came, it leaked and ran separately to buy O ring. M5 may be useless because it is thin, but I finally gave up and used M6.