Features

１、Anchoring with this instrument is carried out through rubber packing element, hydraulic sealing and unsealing by column pipe lifting; it can protect casing and unseal easily.  

２、The rubber packing element is prepared according to special formula, and with big friction force between rubber packing element and casing anchoring is reliable.

３、By using this tool you can eliminate fluctuating load of an oil pipe, improve force-bearing of an oil pipe, prevent oil pipe from dropping-off, increase pump efficiency.