ROTATING EQUIPMENT RELIABILITY
THE LAST SEAL YOUR
BEARING WILL EVER NEED.
INPRO/SEAL – BEARING SOLATORS & SHAFT SEALING SOLUTIONS
Lip seals wear. Mechanical seals fail. Bearing isolators don’t. Inpro/Seal’s non-contacting labyrinth design permanently eliminates lubrication loss and contamination ingress — the two causes behind more than half of all bearing failures in refinery and petrochemical rotating equipment.
Quick Specifications
MANUFACTURER
Inpro/Seal
TECHNOLOGY
Non-Contacting Labyrinth
INGRESS PROTECTION
IP66 Rated
WEARING PARTS
None – Zero Wear Design
SERVICE LIFE
Years
EQUIPMENT
Pumps / Motors / Gearboxes / More
CUSTOMIZATION
Designs and Materials
AVAILABILITY
Same Day, Call 440.478.2922
API 610
API 671
EEE-841
IP66 RATED
ANSI/HI
45+ PROVEN RESULTS
45+ PROVEN RESULTS
⚠ Bearing seal failure on a critical pump? We can help — fast.
HOW IT WORKS
NON-CONTACTING.
PERMANENTLY SEALED.
Every lip seal, packing, or mechanical seal in your plant has a predictable failure mode — wear. Inpro/Seal bearing isolators operate without contact between rotor and stator, eliminating the wear mechanism entirely and delivering permanent bearing protection with no scheduled replacement interval.
01
COMPOUND LABYRINTH BARRIER
The unitized stator and rotor form a compound labyrinth that presents no direct path for contamination to enter the bearing housing. Dirt, moisture, process fluids, and airborne particulates are forced through a tortuous geometry designed to capture and expel — not compress and wear. The XX Interface and contamination chamber route contaminants out through centrifugal force and gravity.
02
ZERO-LOSS LUBRICATION RETENTION
The D-Groove captures oil traveling down the shaft and returns it to the bearing housing. The VBX Ring blocks vapor contamination created by thermal cycling of the bearing enclosure and eliminates grease loss on grease-lubricated equipment. No lip to groove the shaft. No dynamic face to wear out. No lubrication escaping to the environment
03
UNITIZED ASSEMBLY – DROP-IN REPLACEMENT
Inpro/Seal isolators are custom-engineered to the bore, shaft diameter, and equipment design of your specific rotating asset. They install directly into the existing housing with no machining required on most applications — making retrofit straightforward for maintenance teams during planned outages or forced shutdowns.
04
IP66 INGRESS PROTECTION – CERTIFIED
The VB45-S and mini66 designs carry an IP66 rating — certified protection against both harmful dust particulates and powerful water jets from any direction. This is the highest ingress protection standard relevant to rotating equipment in refinery, chemical, and power generation environments, meeting IEEE-841 and API service requirements.
Why lip seals keep failing: Lip seals rely on dynamic contact between a rubber lip and a rotating shaft to seal. Heat, vibration, shaft misalignment, and overpressure accelerate wear at the contact zone — and once the lip loses contact or grooves the shaft, it leaks in both directions. Most maintenance departments replace lip seals every 6–18 months. Inpro/Seal bearing isolators have no contact, no wear, no replacement interval — and documented installations running 20+ years on the original isolator.
50%+
OF BEAING FAILURES CAUSED BY CONTAMINATION & LUBE LOSS
45+
YEARS OF PROVEN BEARING ISOLATOR TECHNOLOGY
IP66
INGRESS PROTECTION – DUST & WATER JET CERTIFIED
0
WEARING PARTS – ZERO SCHEDULED REPLACEMENT INTERVAL
PRODUCT LINE
RIGHT ISOLATOR FOR EVERY APPLICATION
Inpro/Seal manufactures purpose-built isolator designs for standard rotating equipment and specialty applications including steam turbines, paper machine rolls, pillow blocks, and gearboxes. Kelley Industrial stocks and specifies the full line for Midwest refinery and petrochemical customers.
FLAGSHIP – LATEST GENERATION
VB45-S™
The current-generation standard bearing isolator. IP66-rated, 14.61 mm overall length, featuring the patented XX Interface and enlarged contamination chamber. Works in oil and grease lubricated rotating equipment. The replacement spec for most pump, motor, and gearbox applications.
IP66 · Oil & Grease · Pumps · Motors · Gearboxes
Compact · Grease Lubricated
mini66™
The smallest IP66-rated bearing isolator on the market at 9.52 mm overall length. Designed for grease-lubricated electric motors with limited axial space — exceeds IEEE-841 standards. Ideal for motor frames where conventional isolators cannot fit.
IP66 · Grease · Electric Motors · IEEE-841
Magnetic · High Oil Environments
VBMag™
Magnetic face seal technology for flooded, oil mist, and high oil splash bearing conditions. Rare earth magnets create consistent, liquid-tight sealing face loading. Designed for pumps and gearboxes where conventional labyrinth designs cannot maintain oil exclusion.
Magnetic Seal · Flooded · Oil Mist · Pumps
Specialty · Steam Turbines
Hi-Temp Steam™
Accommodates temperatures to 1,000°F (537°C) and keeps steam from entering the bearing housing on process steam turbines. Uses a deflector rotor and VBXX interface for high-temperature sealing integrity across thermal cycling.
IP66 · Oil & Grease · Pumps · Motors · Gearboxes
Specialty · Paper Machine Rolls
PMR™
Purpose-built for wet and dry end paper machine rolls. Accommodates heavy washdown, high humidity, and the cyclic load profiles of paper roll applications. Prevents catastrophic bearing failure and unscheduled downtime in wet process environments.
Washdown Rated · High Humidity · Paper Rolls
Specialty · Pillow Block Bearings
Pillow Block™
IP66-rated isolator designed specifically for pillow block bearing housing geometry. Standard pillow block seals are inadequate for most industrial environments. This design provides the same permanent protection as line-shaft equipment in a pillow block-optimized profile.
IP66 · Pillow Block · Conveyors · Line Shaft
APPLICATIONS
WHERE INPRO/SEAL PERFORMS
CORE APPLICATION
REFINERY ROTATING EQUIPMENT
Crude units, FCCU, hydrocracker, and utility systems run hundreds of pumps and motors in contaminated, high-temperature environments. Inpro/Seal isolators are the documented standard for permanent bearing protection at Marathon, BP, Chevron, and other major operators — replacing lip seals on every pump in reliability-focused maintenance programs.
CORE APPLICATION
PETROCHEMICAL PLANT RELIABILITY
Process pumps and motors in chemical service see aggressive fluids, moisture, and airborne particulates that destroy contact seals within months. Inpro/Seal’s IP66-rated isolators eliminate the contamination ingress pathway entirely — improving MTBR, reducing lubrication consumption, and removing bearing seals from the critical maintenance schedule.
APPLICATION
POWER GENERATION
Feed water pumps, cooling tower fans, condensate systems, and auxiliary motors benefit from permanent bearing protection during long run cycles between planned outages. Inpro/Seal isolators reduce forced outage risk from bearing failure in critical rotating assets.
APPLICATION
COMPRESSORS & GEARBOXES
Flooded oil and oil mist gearboxes present sealing challenges that conventional isolators cannot address. The VBMag magnetic design and specialty gearbox isolators provide liquid-tight sealing integrity for high oil splash and flooded bearing conditions in compressor trains and power transmission gearboxes.
APPLICATION
ELECTRIC MOTORS – ALL FRAMES
IEEE-841 severe duty motors in refinery service require bearing protection rated for the environment. Inpro/Seal’s VB45-S and mini66 designs meet and exceed IEEE-841 ingress protection standards — and install on NEMA frame motors without machining during scheduled maintenance windows.
APPLICATION
DATA CENTER CRITICAL INFASTRUCTURE
Chiller compressors, cooling tower fans, and pump skids supporting hyperscale and colocation facilities run continuously in humid, condensation-prone environments where bearing contamination threatens 24/7 uptime. Inpro/Seal isolators eliminate the contamination ingress pathway — removing bearing seals from the corrective maintenance queue and keeping critical cooling infrastructure off the outage log.
PRODUCT SPECIFICATIONS
ENGINEERED TO THE EQUIPMENT.
STOCKED FOR THE REGION.
MANUFACTURER
Inpro/Seal
TECHNOLOGY
Non-contacting labyrinth bearing isolator – unitized stator/ rotor assembly
FLAGSHIP MODEL
VB45-S™ — Current Generation
INGRESS PROTECTION
IP66 RATED
WEARING PARTS
None – no dynamic contact between rotor and stator
LUBRICATN TYPES
Oil and grease (model-specific — consult Kelley Industrial)
on Request
TEMPERATURE RANGE
Standard: -40°F to +300°F · Hi-Temp models to 1,000°F
SERVICE LIFE
Equipment Lifetime — No Replacement Interval
LEAD TIMES
Same-day Shipments Available on Select Designs*
INSTALLATION
Drop-in retrofit to existing housing bore – no machining required on most applications
MATERIALS
Stainless steel, aluminum, and specialty alloys — application-specific (consult Kelley Industrial)
DISTRIBUTOR
Kelley Industrial Sales – xxx.xxx.xxxx
WE SIZE IT. YOU INSTALL IT.
Inpro/Seal bearing isolators are custom-dimensioned to each equipment application — bore diameter, shaft diameter, housing depth, and lubrication type all factor into the correct model selection. Kelley Industrial manages the specification process for you.
01
PROVIDE EQUIPMENT DATA
Send us your equipment tag, manufacturer, frame size, and existing seal dimensions. Shaft diameter, bore diameter, and housing depth are the key measurements. A nameplate photo and existing seal part number (if available) will get us the rest.
02
WE CONFIRM THE SPECIFICATION
Kelley Industrial works directly with Inpro/Seal to confirm the correct model, material, and design for your application and environment. API, IEEE, and process-specific requirements are factored into the selection.
03
SAME-DAY SHIP CAPABILITY
Inpro/Seal offers same-day shipment on select bearing isolators, including new and custom designs. For turnaround kitting and pre-outage staging, Kelley Industrial can coordinate delivery schedules to your site dock.
04
DROP-IN. DONE.
Most Inpro/Seal isolators install directly into the existing bore — no machining required, no special tools, no modification to the equipment. Installation is straightforward for any maintenance technician familiar with bearing seal removal and replacement.
IF YOUR BEARINGS ARE FAILING, THERE IS A FIX.
Repeat bearing failures on refinery pumps, contamination ingress through worn lip seals, motors dropping bearings on the same position every 12 months — we have solved these problems in refineries and chemical plants across the Midwest for nearly three decades. Tell us what’s happening and we’ll evaluate your application.
Bearing isolators, turnaround safety, and custom-engineered sealing for high-risk industrial operations in the midwest
CONTACT
Kelley Industrial Sales, Inc is based in Cleveland, Ohio.