Goulds 3196 INPRO Bearing Isolator Guide — 332A / 333A
Identify the bearing-isolator position and the dimensions needed to review an INPRO VBXX-D replacement for a Goulds 3196 i-FRAME pump. Do not determine final fit from the frame designation alone.
Power end · position map
Position First. Reference Second.
Identify 332A or 333A by Position
The easiest mistake is ordering the correct isolator for the wrong side. Resolve the position before reviewing the part reference.
POS. 333AInboard
Inboard side of the power end in the applicable configuration. Confirm the frame and interface dimension.
POS. 332AOutboard
Outboard side. The final reference depends on the configuration and must not be selected by “3196” alone.
Four Checks Before Cross-Reference
INPRO VBXX-D Identification
Frame alone does not determine final shaft diameter, housing bore, or bearing-isolator fit. Do not invent INPRO or OEM numbers. When the exact reference is not validated in the canonical database, confirm it by dimension or removed part.
Scroll horizontally to compare →
| Frame | Position | Side | Type | Exact Reference | Action |
|---|---|---|---|---|---|
| STi | 333A | Inboard | Labyrinth isolator | Confirm by diameter / part | Verify → |
| STi | 332A | Outboard | Labyrinth isolator | Confirm by diameter / part | Verify → |
| MTi | 333A | Inboard | Labyrinth isolator | Confirm by diameter / part | Verify → |
| MTi | 332A | Outboard | Labyrinth isolator | Confirm by diameter / part | Verify → |
| LTi / XLT-i | 332A / 333A | Per position | Labyrinth isolator | Confirm installed configuration | Review → |
How the Labyrinth Bearing Isolator Works
The design uses a rotor, stator, and elastomeric sealing elements in a non-contact labyrinth arrangement during normal operation. Correct selection depends on the actual interface and installation.
What to Send for a Bearing Isolator Review
Send a front photo, a side photo, the 332A/333A position if known, the frame, and the measured diameter. Add the INPRO or OEM reference if it is still legible.
Inspection and Installation Checks
Bearing Isolator Questions
What is the difference between 332A and 333A?
They are different positions within the power end; 332A is the outboard position and 333A is the inboard position in applicable configurations.
Is an INPRO the same as a lip seal?
No. A labyrinth bearing isolator is a distinct component, and its interface must be verified before replacement.
Can I order using only “Goulds 3196”?
That is not recommended. Include the position, frame, dimension, reference, or photographs.