Classic Stuffing Boxes

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

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

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

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