Hercules® Classic Stuffing Boxes

Regular Stuffing Box (SB™)

• Original design
• Superior & dependable performance
• Lubricating Upper Gland with grease zerk
• Unique misaligning feature reduces need to exact alignment with the pumping unit
• 1,500 PSI WP
• 350° F maximum operating temperature

Tee Base Stuffing Box (SBT™)

• Combines SB™ and cross tee with 1" bleeder
• Eliminates one threaded connection
• Results in a shorter hook-up
• Side outlets:
  • 2" LP with 2" bottom connection
  • 3" LP with 2-1/2" or 3" bottom connection
• Lubricating Upper Gland with grease zerk
• 1,500 PSI WP
• 350° F maximum working temperature

Double Packed Stuffing Box (DPSB™)

• Most widely-used stuffing box in the industry
• Primary packing can be changed under pressure by tightening compression bolts
• Unique misaligning feature reduces need for exact alignment with the pumping unit
• Adaptable to many accessories
• Lubricating Upper Gland with grease zerk

Literature

• Hercules® Classic Stuffing Boxes

Hercules Stuffing Boxes are offered in a variety of styles:

• Inverted Cone Stuffing Boxes
• High-Performance Stuffing Boxes
• Critical Service Stuffing Boxes

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