ROTATING EQUIPMENT RELIABILITY
THE LAST SHAFT SEAL
YOUR PROCESS NEEDS.
INPRO/SEAL AIR MIZER® – COMPLETE SHAFT SEALING SOLUTIONS
Packing leaks. Mechanical seals wear. Air Mizer seals don’t. Inpro/Seal’s positive-purge, non-contacting design permanently eliminates product loss and contamination ingress on agitators, mixers, rotary valves, and bulk solids handling equipment — with no wearing parts and no replacement interval.
Quick Specifications
MANUFACTURER
Inpro/Seal
TECHNOLOGY
Positive Purge – Non-Contacting
PURGE MEDIUM
Air · Inert Gas · Water
WEARING PARTS
None – Zero Wear Design
SERVICE LIFE
Years
EQUIPMENT
Agitators · Mixers · Rotary Valves
MISALIGNMENT
Full Articulation – All Axes
AVAILABILITY
Call 440.478.2922
POWDERS
LIQUIDS
SLURRIES
BULK SOLIDS
HAZARDOUS EMISSIONS
FOOD GRADE AVAILABLE
CUSTOM ENGINEERED
⚠ Agitator or mixer seal leaking product? We can engineer a permanent fix — fast.
HOW IT WORKS
POSITIVE PURGE.
NO CONTACT. NO WEAR
Every mechanical seal, packing gland, and lip seal on your process equipment wears against the shaft. Shaft deflection, runout, and misalignment accelerate that wear to failure. The Air Mizer eliminates contact entirely — using a precision positive-pressure purge to seal against both product escape and atmospheric contamination simultaneously, with full articulation to follow the shaft wherever it moves.
01
PRECISSION CLEARANCE + POSITIVE PURGE
Small volumes of air, inert gas, or water flow through a precision clearance between the throttle and shaft. The purge pressurizes the annular gap evenly — no dead spots, no uneven wear zones, no differential pressure failure modes. Unlike packing, which relies on mechanical contact, the Air Mizer directs sealing medium simultaneously toward the product side and the atmosphere side. One design. Both directions blocked.
02
FULL SHAFT ARTICULATION – MISALIGNMENT TOLERANCE
Side-entry agitators, mixers, and process equipment produce radial run-out, axial movement, and angular misalignment at the shaft. Contact seals fight this movement — and fail because of it. The Air Mizer fully articulates to accommodate all three axes without compressing against the shaft. No fretting of the shaft surface. No periodic packing adjustments. No seal face tracking wear.
03
CUSTOM ENGINEERED – DROP-IN ON EXISTING EQUIPMENT
Every Air Mizer is engineered to the shaft diameter, housing geometry, process fluid, and operating conditions of the specific application. On most retrofits, the seal installs directly into the existing stuffing box. No machining. No housing replacement. Kelley Industrial specifies the correct design — agitator, mixer, rotary valve, or conveyor — and coordinates AM Control Panel integration where automatic purge regulation is required.
04
DUAL-DIRECTION SEALING – ONE DESIGN
Conventional shaft seals choose a direction: product in, or environment out. The Air Mizer seals both. The purge barrier prevents process fluids, powders, slurries, and bulk solids from escaping — while blocking atmospheric contamination and moisture from entering the process. This matters in food-grade, hazardous chemical, and regulated emission applications where one-way sealing is not enough.
Why packing and mechanical seals keep failing on agitators: Side-entry agitators can produce more than 0.250 inches of radial shaft movement under process load. Mechanical seals require concentricity within 0.002 inches — a tolerance agitator shafts routinely violate. Packing compensates by gripping harder, grooves the shaft, and still leaks. The Air Mizer was designed specifically for this condition. Non-contacting. Fully articulating. No tolerance to violate.
$74K
ANNUAL SAVINGS DOCUMENTED AT SINGLE PAPER MILL INSTALLATION
<1yr
TYPICAL PAYBACK PERIOD – DOCUMENTED ACROSS MULTIPLE INSTALLATIONS
0
WEARING PARTS – ZERO SCHEDULED REPLACEMENT INTERVAL
2-3 psi
TYPICAL PURGE PRESSURE – LOW OPERATING COST. CONTINUOUS SEAL INTEGRITY
PRODUCT LINE
RIGHT AIR MIZER FOR EVERY APPLICATION
The Air Mizer product family covers standard process applications through specialty food-grade and hazardous emission requirements. Every design is custom engineered to shaft diameter and application geometry. Kelley Industrial specifies and sources the full line for Midwest chemical, pulp and paper, and refinery customers.
STANDARD· POWDERS, LIQUIDS & SLURRIES
Air Mizer® AM
The core Air Mizer design for industrial process equipment in agitator, mixer, blender, screw conveyor, and rotary valve applications. Handles powders, liquids, slurries, and bulk solids. Custom engineered to shaft diameter and housing geometry. Can be integrated with the AM Control Panel for automatic purge regulation and monitoring.
AIR/ INERT GAS · AGITATORS · MIXERS · CONVEYORS · ROTARY VALVES
SPECIALTY · FDA COMPLIANT MATERIALS
Air Mizer® Food Grade
Purpose-built for food processing, pharmaceutical, and beverage applications where product purity and regulatory compliance are non-negotiable. FDA-compliant materials throughout, designed for CIP washdown environments. Prevents product contamination and eliminates lubricant ingress from contact seals on food-contact process equipment.
FDA MATERIALS · CIP RATED · FOOD & PHARAMA · BEVERAGE
SPECIALTY · RETROFIT FOCUSED
Air Mizer® Smooth Bore
Designed for installations where the existing stuffing box has been worn or damaged by prior packing or contact seals. The smooth bore design accommodates irregular housing geometry without machining or housing replacement, making it the retrofit solution for aging process equipment with compromised sealing surfaces.
RETROFIT · WORN STUFFING BOX · NO MACHINING REQUIRED
SYSTEM · AUTOMATED AIR REGULATION
AM Control Panel
The AM Control Panel provides automatic regulation, monitoring, and alarming for Air Mizer installations. Maintains consistent purge pressure across operating conditions, generates alarms on purge loss, and simplifies the air system setup to a single panel connection. Recommended for critical process equipment and multi-seal installations.
AUTOMATIC REGULATION · PRESSURE MONITORING ·MULTI-SEAL SYSTEMS
SPECIALTY · EXTRUDER BARREL SEALING
Air Mizer® Extruder
Engineered for the unique shaft geometry and high-pressure, high-temperature conditions at extruder barrel inlets. Prevents polymer, rubber, and hot process material from escaping at the shaft entry point while blocking atmospheric contamination from entering the extruder barrel. Withstands elevated process temperatures without seal degradation.
HIGH TEMP · HIGH PRESSURE · EXTRUDERS · POLYMER PROCESSING
SPECIALTY · HAZARDOUS EMISSION CONTROL
Air Mizer® Inert Gas
For applications where air purge is incompatible with the process — reactive materials, explosive atmospheres, or regulated volatile emissions. Inert gas purge (nitrogen most common) maintains the same positive-pressure sealing barrier without introducing oxygen or moisture to the process. Supports EPA emission reduction compliance on chemical processing equipment.
NITROGEN PURGE · EXPLOSIVE ATMOSPHERE · EMISSIONS CONTROLS · CHEMICAL
APPLICATIONS
WHERE AIR MIZER SOLVES THE PROBLEM
CORE APPLICATION
SIDE-ENTRY AGITATORS
Side-entry agitators in chemical, pulp and paper, and refinery service produce shaft deflection and misalignment that destroys conventional seals within months. Documented installations on white liquor agitators handling hot, corrosive hazardous materials show $23,000+ annual savings per agitator pair after Air Mizer retrofit — with no maintenance and no product loss since installation.
CORE APPLICATION
ROTARY VALVES & FEEDS
Rotary feeders in bulk solids handling — pneumatic conveying, food processing, and chemical systems — require sealing on both ends of the rotor shaft simultaneously. Air-purged Air Mizer designs with flange-mounted installation and 2–3 psi purge pressure have replaced conventional seals on rotary valves across multiple industries, running maintenance-free since installation with no product contamination.
APPLICATION
MIXERS & BLENDERS
Industrial mixers and blenders handling powders, pastes, and slurries present the same misalignment challenges as agitators. Calcium carbonate, filler clay, and slurry mixers documented $51,000 annual savings at a single paper mill location after Air Mizer installation — primarily from elimination of product loss through failed shaft seals.
APPLICATION
SCREW CONVEYORS
Trough-end seals on screw conveyors handling bulk solids, powders, and abrasive materials wear rapidly under combined radial and axial loading. The Air Mizer’s purge barrier keeps fine particulates — including hazardous and combustible dusts — from migrating out of the conveyor housing, addressing both maintenance and regulatory compliance objectives simultaneously.
APPLICATION
CHEMICAL PROCESSING EQUIPMENT
Process reactors, dissolver tanks, and chemical mixing vessels require shaft sealing that handles aggressive chemistry, elevated temperatures, and volatile emissions without contact seal degradation. Inert gas purge Air Mizer designs seal against hazardous vapor release while blocking atmospheric moisture contamination — supporting EPA compliance on regulated emission equipment.
APPLICATION
PULP & PAPER PROCESS
Stock chests, pulpers, and chemical mixing tanks in pulp and paper service run aggressive liquors, hot slurries, and fibrous stock that destroy packing and mechanical seals. Air Mizer seals deliver permanent shaft sealing on equipment that previously required continuous packing maintenance every few weeks — removing the application entirely from the maintenance schedule.
LET’S TALK ABOUT YOUR SHAFT SEALING.
Whether it’s product leakage on a mixer, contamination ingress on a conveyor drive, or a food-grade application that standard seals can’t handle — describe the equipment and operating conditions and we’ll specify the right Air Mizer configuration. We respond to most inquiries within one business day.
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.