The sealing types of sliding sleeve can be divided into two categories 1 Inelastic seal (sealing unit is only V-ring); 2. Elastic seal (the sealing unit is V-ring and O-ring);
There are two types of seals for the sliding sleeve: 1. Inelastic seal (the sealing unit is only V-ring); 2. Elastic sealing (the sealing unit is V ring and O ring);