Complete fluid exposure
List product stages, concentrations, contaminants, solids, rinses, cleaning fluids, exposure order, hold periods and upset cases.
Rotating equipment / Sealing checklist
Select product-contact sealing from the full exposure and shaft duty.
A product name or generic elastomer label cannot select the seal. Mechanical-seal faces, secondary seals, hardware, shaft movement and any support system must be reviewed against the complete process and cleaning sequence.
01 / MediumProduct, intermediates, rinses and cleaning fluids
02 / DutyShaft motion, operating states, solids and thermal change
03 / SystemSeal arrangement, materials, support and monitoring
Review the sealing system
Fluid compatibility is necessary, but it is not the whole seal duty.
The seal sits at the intersection of chemistry, rotating motion, equipment geometry and the process environment. Every transition and cleaning fluid belongs in the brief.
Shaft and operating duty
Describe motion, run pattern, pressure and temperature states, dry-running risk, vibration, start-stop sequence and maintenance access.
Containment and support
Define acceptable leakage, release consequence, flush or support-fluid constraints, monitoring, utilities and ownership of auxiliary equipment.
Seal-selection worksheet
Move from fluid record to an equipment-and-seal supplier review.
Do not choose a seal code from one operating point. Preserve normal processing, cleaning and abnormal states in one review package.
01→
Map every exposure
Record product, additions, vapor, rinse, cleaning and environmental contact in the order the seal sees them.
02→
Describe the mechanical duty
Add shaft motion, run cycle, solids, pressure and temperature transitions, vibration and installation constraints.
03→
Define containment needs
State acceptable leakage, consequence, support-fluid limits, monitoring, drains and maintenance workflow.
04
Confirm and test
Obtain joint equipment and seal-supplier review, then test representative materials or service where compatibility or behavior remains uncertain.
Product-contact sealing RFQ
Give the seal reviewer the product, motion and support-system boundary.
This checklist does not prescribe a single or multiple-seal arrangement or any material. It exposes the inputs the responsible suppliers need.
Open the process brief- 01All process fluids
Product stages, concentration ranges, contaminants, solids, vapor and formulation variability.
- 02Cleaning exposure
Rinse and cleaning fluids, order, temperature, contact time, frequency and any steam or dry step.
- 03Operating states
Normal, start-up, shutdown, hold, empty, vacuum or other pressure state and foreseeable upset conditions.
- 04Shaft duty
Equipment type, shaft motion, run pattern, start-stop behavior, vibration evidence and maintenance access.
- 05Containment target
Acceptable leakage basis, release consequence, environmental boundary, drain route and inspection method.
- 06Support & verification
Available utilities, support-fluid restrictions, monitoring, supplier review, exposure test and approval owner.
Draft source record / Pending technical review
First-party agitator-seal sources keep medium, shaft duty and support systems together.
These agitator and secondary-seal sources provide general review factors. They do not select a seal for this site or transfer another supplier’s arrangement, material or operating limit.
Buyer decision FAQ
Seal selection begins with service evidence—not a material nickname.
Can a mechanical seal be selected from the product name alone?
No. The review needs full fluid composition and sequence, solids, temperature and pressure states, shaft duty, cleaning, containment target, equipment geometry and support-system conditions.
Are elastomer compatibility charts enough to approve a seal?
No. Charts can support screening, but combined fluids, exposure sequence, temperature, dynamic motion, abrasion and actual hardware can change the service. Obtain supplier review and test uncertain exposure.
Why include cleaning fluids in the seal brief?
The seal can see rinse and cleaning fluids as well as product. Their concentration, order, temperature, contact time and frequency can affect compatibility and the operating sequence.
When should a seal support system be discussed?
Discuss it whenever the selected sealing arrangement may need controlled fluid, pressure, temperature, lubrication or monitoring conditions. The responsible seal and equipment suppliers must define the need and boundary.