Heavy Duty Cylinders (NFPA)
  Model Range: HD
• Cylinders For Abusive Conditions
• Combining NFPA dimensional interchangeability and high quality components, the “HD” Series offers excellent performance and long service life, even in the most severe of conditions.

External Bearing Ensures Smooth Motion
• HD cylinders are fitted with a heavy-duty external rod bearing in the rod end head.
• Teflon -impregnated and hardcoat anodized, this bearing ensures smooth rod motion while maintaining rod rigidity and stability.
• The entire rod gland and bearing may be quickly removed and replaced without disassembling the cylinder.