Hercules® Critical Service Stuffing Boxes

Pollution Control Stuffing Box (PCSB™)

• If polished rod breaks, flapper closes automatically
• Two independently adjustable packing chambers
• Pollution Control Adapter acceptable to -50° F
• Meets NACE MR-01-75
• Base has 1/2" NPT test port
• Adaptable to Anti-Pollution Adapter (APA™)
• Packing can be changed under pressure
• Unique misaligning feature reduces need for exact alignment with the pumping unit
• Flanged bottom connection available
• 1,500 PSI WP
• 350° F maximum operating temperature

High Temperature Double-Packed Stuffing Box (HTD™)

• Designed for high pressure & high temperature wells
• Meets NACE MR-01-75
• Dual packing chamber
• Primary packing can be changed under pressure
• Versatile chamber design accepts different types of packing, including Chevron, standard crown ring compression and Kevlar®/PTFE braid rope packing
• 3,000 PSI WP
• Chevron NBR packing - 250° F maximum operating temperature
  Chevron HSN packing - 325° F maximum operating temperature
  Chevron FKM packing - 400° F maximum operating temperature
  Kevlar®/PTFE packing - 540° F maximum operating temperature

Literature

• Hercules® Critical Service Stuffing Boxes

Hercules Stuffing Boxes are offered in a variety of styles:

• Classic Stuffing Boxes
• Inverted Cone Stuffing Boxes
• High-Performance Stuffing Boxes

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