Hydraulic Cylinders Inc.’s Series 3 NFPA Tie-Rod Cylinders are made to order for large-bore pneumatic applications, with 7″–14″ bore options for higher-force industrial equipment. Built to NFPA-interchangeable size standards, they help ensure consistent fit across common mounting styles and simplify replacement planning. Series 3 cylinders use an aluminum body with a hard-anodized ID tube and solid aluminum head and cap, plus a flush-mount (MX5/X5) standard design for broad interchangeability. Standard cushioning with needle-valve adjustment helps smooth end-of-stroke deceleration and reduce impact. Options include oversize rods, stainless components and tubing, non-rotating styles, rod locks, and air/oil tanks.