... pressure. 2.High crushing strength. 3.Customized OEM/ODM Casing seal (Y type)Description:-Type: BT type,FS type,Y ... Mainly used for casing head and tubing head bottom secondary seal-Usually a BT sealed pressure less than or equal ... to 5000 PSI, Two BT seal can be used for high pressure.-Through the injection pressure ... .-temperature range: -60°C ~ +121°C (K, U). Casing seal (Y type)