High Performance Lubricating Upper Gland (HPLUG™)
• Provides a secondary seal for stuffing boxes.
• Adaptable to Anti-Pollution Adapter (APA™).
• Fits any Hercules Classic model.
• Modified version available for Hercules IVSB™, IVSBT™ & IVDPSB™ models.
• Zerk fitting for periodic greasing.
• Uses Chevron packing.
• Rod sizes: 1", 1-1/8", 1-1/4", 1-5/16", 1-3/8", 1-7/16",
1-1/2", 1-3/4".
• Body & cap: ductile iron.
• Upper/Lower Packing Rings: MDS Nylon (Bronze-optional).