The vice-seal of casing head cross use the BT seal structure, this kind of structure can achieve the ideal seal effect by inject plastic seal through the injection molding

Top Flange            Bottom Flange         Top Flange            Bottom Flange

in(mm)                          in(mm)                            in(mm)                             in(mm)

11"×2000psi              1"×2000psi             11"×5000psi           13 5/8×5000psi

(279.4mm×14MPa)     (279.4mm×14MPa)     (279.4mm×35MPa)    (346.1mm×35MPa)

11"×2000psi             13 5/8×2000psi       11"×10000psi         13 5/8×5000psi

(279.4mm×14MPa)     (346.1 mm×14MPa)    (279.4mm×70MPa)        (346.1mm×35MPa)

11"×3000psi           11"×3000psi           11"×15000psi    13 5/8×5000psi (279.4mm×21MPa)     (279.4mm×21MPa)     (279.4mm×105MPa)   (346.1mm×35MPa)

13 5/8×3000psi         21 1/4"×2000psi      13 5/8×5000psi        20 3/4"×3000psi 

11"×3000psi           13 5/8×2000psi         13 5/8×5000psi        21 1/14"×2000psi       (279.4mm×21MPa)   (346.1 mm×14MP)   (346.1 mm×35MPa) (539.8mm×14MPa)                      

11"×3000psi                 13 5/8×3000psi            13 5/8×10000psi    13 5/8×5000psi

(279.4mm×21MPa)      (346.1 mm×21MPa)     (346.1 mm×70MPa)  (346.1mm×35MPa)

11"×5000psi                 13 5/8×3000psi          13 5/8×15000psi      13 5/8×5000psi

(279.4mm×21MPa)      (346.1 mm×21MPa)   (346.1 mm×105MPa) (346.1mm×35MPa)