Classic Stuffing Boxes

Our original stuffing box design is considered the industry standard thanks to its reliable and simple design.

Closeup of Classic Stuffing Boxes
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Description

As an economic option for your production needs, our classic stuffing box has a unique misaligning feature that reduces the need for exact alignment with the pumping unit.

Single Pack Stuffing Box (SB)

  • Original design
  • Superior and dependable performance
  • Standard model has lube upper gland (LUG) with grease zerk
  • Optional oil reservoir gland (ORG) and APA control device
  • Unique misaligning feature reduces need for exact alignment with the pumping unit
  • LUG and ORG have two heavy hex nuts on each bolt that can support up to 20,000 lb when engaged during well servicing

Tee Base Stuffing Box (SBT)

  • Combines SB and cross-tee with 1-in. bleeder
  • Eliminates one-threaded connection
  • Results in a quicker hookup
  • Side outlets:
    • 2-in. LP with 2-in. bottom connection
    • 3-in. LP with 2½- or 3-in. bottom connection
  • Standard model has LUG with grease zerk
  • Optional ORG and APA control device
  • LUG has two heavy hex nuts on each bolt that can support up to 20,000 lb when engaged during well servicing

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
  • Standard model has LUG with grease zerk
  • Optional ORG and APA control device
  • LUG has two heavy hex nuts on each bolt that can support up to 20,000 lb when engaged during well servicing
  • Flanged bottom connection available

Regular Inverted Stuffing Box (IVSB)

  • Lowest profile design
  • Ideal for smaller pumping units
  • Furnished with three top cones and one bottom cone; one top cone (thin cone) can be removed to reduce overall height even further without impairing pressure rating (if reduced packing life is acceptable)
  • Polished rod support (PRS) is required during well servicing to prevent the transfer of rod string weight to the packing

Tee Base Inverted Stuffing Box (IVSBT)

  • Combines IVSB and cross-tee with 1-in. bleeder
  • Eliminates one-threaded connection
  • Lower profile than classic models
  • Side outlets:
    • 2-in. LP with 2-in. bottom connection
    • 3-in. LP with 2½- or 3-in. bottom connection
  • Furnished with three top cones and one bottom cone
  • One top cone (thin cone) can be removed to reduce overall height even further without impairing pressure rating (if reduced packing life is acceptable)
  • PRS is required during well servicing to prevent the transfer of rod string weight to the packing

Double Packed Inverted Stuffing Box (IVDPSB)

  • Exceptionally durable; built for performance under tough conditions
  • Primary packing can be changed under pressure by tightening compression bolts
  • Lower profile than classic model
  • Furnished with three top cones and one bottom cone; one top cone (thin cone) can be removed to reduce overall height even further without impairing pressure rating (if reduced packing life is acceptable)
  • PRS is required during well servicing to prevent the transfer of rod string weight to the packing
  • Flanged bottom connection available
Specifications

Classic Stuffing Boxes Specifications

Specifications SB SBT DPSB IVSB IVSBT IVDPSB
Working pressure 1,500 psi 1,500 psi 1,500 psi 1,500 psi 1,500 psi 1,500 psi
Bottom thread
(API tubing or LP) 		2 in., 2½ in., 3 in., 4 in. 2 in., 2½ in., 3 in. 2 in., 2½ in.,3 in., 4 in. 2 in., 2½ in., 3 in., 4 in. 2 in., 2½ in., 3 in. 2 in., 2½ in., 3 in., 4 in.
Bottom connection Male Female Male Male Female Male
Weight (with Std. LUG**)
2 in. 24 lb 33 lb 50 lb 19 lb 28 lb 45 lb
2½ in. 25 lb 37 lb 51 lb 20 lb 32 lb 46 lb
3 in. 26 lb 42 lb 52 lb 21 lb 38 lb 47 lb
4 in. 29 lb N/A 56 lb 24 lb N/A 51 lb
Height
(includes pin or box connection) 		13½ in. 16 in. 17 in. 10 in. 23 in. 14 in.
Material Ductile iron*
Split cone packing – rod sizes 1, 1⅛, 1¼, 15/16, 1⅜, 17/16, 1½, and 1¾ in.
Pieces required
Top cones 4 4 6 3 3 5
Bottom cones 1 1 1 1 1 1

*Corrosion-resistant coatings available; contact customer service.
**Add 11 lb if equipped with optional HPLUG.

Technician assembling Classic Stuffing Boxes