Hydraulic & Vacuum Cylinder Seal Repair

We are looking for a freelance mechanical seal expert to help select the right rod seal for a single-acting hydraulic cylinder that also operates under vacuum conditions.

System Details:

Motor sucks and returns oil (creates both vacuum and pressure)

Reciprocating rod, blind-end cylinder

Seal must work under vacuum and hydraulic pressure

Must be readily available in India


Your Task:

Review system specs

Recommend best seal or seal combination

Suggest suitable vendors/brands

Explain the technical reasoning


Requirements:

Experience with vacuum + hydraulic sealing

Knowledge of PTFE, spring-energized, and dynamic seals

Familiar with suppliers like Kastas, Parker, SKF, etc.