1. Adopt double cylinder structure to ensure packer's setting pressure and form a good seal.
2. Slip with a one-piece structure, uniform force, to protect the outer casing.
3. Packer part of the two-way slip lock, packer can ensure a permanent seal.
4. Packer cartridge can withstand 70MPa positive and negative pressure difference after setting.
Packer plastic tube temperature 150 ℃.
6. Lose the hand using machinery, is turned over.
Throwing tools have three sets of V-type sealing elements, to ensure effective sealing.
8. Lost tools can be reused.