Our High-Performance Lubricating Upper Gland (HPLUG) provides a secondary seal against potential environmental leaks in the Hercules™ classic stuffing box and must be used with an anti-pollution adapter. Models include V-ring packing and grease zerks for periodic greasing. Please contact customer service when adapting an HPLUG to an existing Hercules stuffing box.
High-Performance Lubricating Upper Gland Specifications
|Available rod sizes (inches)||1⅛, 1¼, 1½, and 1¾|
|Available V-ring packing||NBR, HSN, FMK, or Kevlar|