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Rotary Seals, Shaft Seals and Oil Seals

Rotary Seals involve rotational motion from a shaft and housing. Used in oscillating or rotating parts, their primary function is to keep lubricated fluids in, whilst preventing the ingress of contaminants, such as mud and water.

Important factors to consider when choosing a rotary seal is the frictional heat buildup, material stretch, compression (squeeze), operational temperature limits, shaft and glandular machining.

FTL Technology offers a wide range of specialised solutions using Rotary Seals, Shaft Seals, Radial Lip Seals, Radial Oil Seals, Mechanical Face Seals, and Cassette Seals, as well as custom-made designs

Rotary seals are built to perform exceptionally well in many challenging rotational scenarios, due to their ability to demonstrate superior low-friction properties and their excellent resistance to wear. And with specialist seals available, such as radial shaft seals - the range of benefits goes way beyond fluid sealing.

For example radial shaft seals can serve as a scraper in mechanical processes with helical movement, making them a robust and reliable component that offers great value for money. All rotary shaft seals enable friction-free operation by preventing lubricant from leaking from the assembly, thanks to a clearance gap between the shaft and the housing.

FTL Technology are suppliers and engineers of only high quality Rotary Seal and Shaft Seal solutions, with a wealth of experience maintaining rotating seal systems in peak condition, extending component life and improving operational performance.

Sizes: 4mm - 480mm shaft diameter. Custom dimensions are available – please contact an FTL Engineer.

Profiles: Rotary Shaft Seal, Mechanical Face Seal, PTFE Shaft Seal, Laminar Rings, Cassette Seals, Custom profiles are available – please contact an FTL engineer.

Materials: Nitrile (NBR), (FKM/FPM), Silicone (VMQ), Leather, PTFE, Polyacrylic (ACM), Neoprene (CR). Rotary Seals can be rubber enclosed, metal enclosed and metal cased.

Standards: ISO 9001:2008 for stockholding and distribution of sealing and bearing solutions for mechanical assemblies and engineered products to worldwide industrial markets.

Associated Products: Custom Seal Kits, Shaft Repair Kits, V-Rings, Bearings Solutions

Brands: Freudenberg, Federal Mogul, Elring Klinger, MECO Seals, Carco.

FTL Technology’s selection of Rotary Seal, Shaft Seal and Oil Seal solutions are tested and certified to API specifications (American Petroleum Institute). This includes; API 622, API 589, API 6A & 6D.

How can we help? Contact our sealing engineers today, or chat with us online.

 ProductProduct Reference  DescriptionApplicationIndustry
 HB MECO Seal HB MECO® SealThe HB model is a full-contact, soft-face mechanical shaft seal, using an elastomer drive to rotate bearing-grade, synthetic seal faces against fixed, stainless steel seal faces. The various seal assemblies are sized for equipment following standards of the Conveyor Equipment Manufacturers' Association (C.E.M.A.) and their metric equivalents.
  • Screw conveyors/scrolls
  • Small blenders
  • Bucket elevators
  • The HB Seal model is used on horizontal, inclined and vertical shafts for unsplit installations.
Bulk process industries
 HC MECO Seal HC MECO® SealThe MECO HC seal model is the best air-free choice in sealing technology for screw conveyors . The HC model is a full-contact, soft-face mechanical shaft seal, using an elastomer drive to rotate bearing-grade, polymeric seal faces against fixed, stainless steel seal faces. The various seal assemblies are sized for equipment following standards of the Conveyor Equipment Manufacturers Association (C.E.M.A.) and their metric equivalents.
  • Screw conveyors/scrolls
  • Small blenders
  • Bucket elevators
  • The HC Seal model is used on horizontal, inclined and vertical shafts for unsplit installations.
Bulk process industries
 MECO Seals for ATEX ApplicationsMECO® Seals for ATEX ApplicationsATEX is a series of explosion prevention standards, codified in EN 94/9/EC, to which equipment manufacturers must conform, in order to place machinery in service in Europe in potentially explosive environments.

Compliance involves formal risk assessments and the use of certified machinery and components. ATEX was mandated in 2003, after which time new machinery must be compliant. Upgrades or retrofits to machinery which was in service prior to 2004 must also be ATEX-compliant.

MECO seals can be designed for certain explosive atmosphere applications where EN 94/9/EC must be adhered to.

MECO's soft-face technology uses materials with high inherent lubricity, which run cooler than radial, constricting seals without the use of fluid lubricants.
  • Explosive Atmosphere Applications
  • Retrofit applications, where a new seal will be mounted on an older piece of machinery placed into service prior to adoption of 94/9/EC, MECO offers seals specifically EX-marked for ATEX service.
  • New machinery, equipment manufacturers can opt to purchase EX-marked and tested seals, or they may equip their new machines with a variety of unmarked MECO models, and then include the seals under the umbrella of their ATEX declaration for the completed machine.
  • MECO can design seals for Equipment Group II, Categories 2 and 3 D and G (Zone 1/21 or 2/22), where process parameters will permit the seal to operate within prescribed temperature and pressure limits. These limits vary considerably according to machinery and process requirements, so each ATEX seal is individually designed, built and marked for a specific process. MECO does not manufacture seals for Category 1 (Zone 0/20) service.
 
 AH Type-2 MECO SealAH Type-2 MECO® SealThe MECO AH Type-2 model is the best choice for fitting a split seal in limited space on small to large shaft diameters. The configuration is a double mechanical seal using an elastomer drive to rotate bearing-grade synthetic seal faces against fixed, stainless steel seal faces. The AH Type-2 uses a barrier fluid to pneumatically load the seal faces and isolate the process from the atmosphere. The AH Type-2 is suited for MRO and OEM equipment.
  • Used in Horizontal, inclined and vertical shafts.
  • Applicable when an inert barrier fluid is required to isolate the process from the atmosphere.
  • Blenders
  • Bucket elevators
  • Some polymer extruders
  • Both ends of a screw conveyor.
  • Two unique configurations following the core principles are available.
  • Can be designed to fit between the gear reducer and trough end of a screw conveyor.
 
 EA-Type1 MECO SealEA-Type1 MECO® SealThe MECO EA Type-1 fully-split seal model is a great selection when sealing wet slurries. The fully-split configuration uses an elastomer drive to rotate two hardened stainless steel seal faces against two fixed, bearing grade polymeric stationary seal faces with their contacting sealing plane set perpendicular to the shaft. The polymeric stationary seal faces are built into two fully-split stainless steel plates. One split plate is mounted to the vessel wall and the other is manually positioned a set distance from the mounted plate. Between the plates an elastomer is used to form a seal cavity where gravity-fed water flushes and cools the chamber without any back pressure applied.Where axial or linear space is limited, the MECO EA Type-1 seal model is the solution for sealing wet abrasive slurries encountered in:
  • Pulpers
  • Agitators
  • Cylindrical blenders
  • Paddle mixers
  • Holding vessels
  • Flocculators
  • Mixing conveyors and similar rotating equipment.
  • Side-entry mixers containing drywall or sheetrock mud.
  • They withstand the abuse of shock loading, high shaft runout and abrasives often associated with pulpers recycling office paper and old corrugated containers (OCC). The entire assembly is fully-split and serviceable onsite.
  • Pulp & paper
  • Home building products
  • Sewage and water treatment
  • Bbiomass and ethanol production
  • Processes handling water slurries
 EP Type-1 meco sEALEA-Type2 MECO® SealThe MECO EA Type-2 model is the best choice in many sealing applications for low to moderate shaft speeds on small to very large shaft diameters. The EA Type-2 uses full-contact, soft-face mechanical shaft sealing technology, sized for OEM and custom in-house process equipment. The EA Type-2 model provides the superior performance, durability and quality of workmanship that are hallmarks of MECO’s many other highly-regarded seals.
  • Large solvent extractors
  • Pressurized conveyors
  • Holding tanks or similar rotating equipment.
  • Fitment for some blenders, dryers & sigma mixers is also possible.
  • Horizontal, inclined or vertical shafts and configured for a fully-split installation.
  • Rotating shafts - where an inert gas barrier in the seal chamber is beneficial.
  • Plastics
  • Oilseed processors
  • Chemicals
  • Carbon anodes
  • Metals
  • Pharmaceuticals and food processors
 EP Type-1 MECO SealEP Type-1 MECO® SealThe MECO EP Type-1 seal model is the best choice in wet sealing technology on moderate to very large shaft diameters entering the vessel from any direction. The fully-split configuration uses an elastomer drive to rotate two hardened stainless steel seal faces against two fixed polymeric bearing-grade stationary seal faces. The EP Type-1 is designed around it’s own fully-split, stuffing box-type housing that utilizes external springs to close the seal faces. The housing forms a seal cavity where gravity-fed water flushes and cools the chamber without any back pressure applied.
  • Wet abrasive slurries encountered in pulpers
  • Agitators
  • Cylindrical blenders
  • Paddle mixers
  • Holding vessels
  • Flocculators
  • Mixing conveyors and similar rotating equipment
  • Pulp & paper
  • Home building products
  • Sewage and water treatment
  • Biomass
  • Ethanol production
 EP Type-2 MECO SealEP Type-2 MECO® SealThe MECO EP Type-2 model is the best choice for many sealing applications with low to medium-high shaft speeds, on small to large shaft diameters. The configuration is a double mechanical seal using an elastomer drive to rotate bearing-grade, synthetic seal faces against fixed, hardened stainless steel seal faces. The EP Type-2 uses full-contact, soft-face mechanical shaft sealing technology, sized for OEM and existing in-house process equipment.
  • Single- or twin-shafted extruder-compounders
  • Plow blenders
  • Paddle blenders
  • Conveyors
  • Plastics
  • Chemical
  • Metals
  • Pharmaceutical
  • Food and other process industries
 EP Type-3 MECO SealEP Type-3 MECO® SealThe MECO EP Type 3 model is the best choice in split sealing technology for horizontal dryers and reactors in vacuum service. The configuration is a double mechanical seal, using a mechanical drive to rotate bearing-grade, synthetic seal faces against fixed, hardened stainless steel seal faces. The EP Type 3 uses full-contact, soft face mechanical shaft sealing technology, sized for OEM and custom in-house process equipment.
  •  Dryers
  • Sigma mixers
  • Plow blenders
  • Paddle blender
  • Reactor vessels
  • Extruder-compounders
  • Chemical
  • Plastics
  • Metals
  • Pharmaceutical
  • Other process industries
 OFS-Type1 MECO SealOFS-Type1 MECO® SealThe MECO OFS Type-1 seal is frequently the best, fully-split seal for vacuum, low pressure, and abrasive applications. The design tolerates both runout and thermal growth at moderate speeds. The OFS Type-1 places a single, hardened, stainless steel rotary seal face, spring-loaded against a single, bearing-grade, polymeric stationary seal face. The seal does not require a barrier fluid. A wide selection of materials are available, allowing service in diverse processes. The fully-split seal is custom-designed for existing process equipment or is tailored to OEM or end-users wishes.
  • Top-entry agitators
  • Crystallizers
  • Dryers
  • Pan mixers
  • Blenders
  • Hoppers
 
  • Petrochemical
  • Plastics
  • Metals
  • Minerals
  • Other process industries
 OFS Type-2 MECO SealOFS Type-2 MECO® SealThe patented MECO OFS Type-2 model is the best choice in many sealing applications for low to moderate speed equipment. The OFS Type-2 uses full-contact, soft-face mechanical shaft sealing technology, sized for OEM and custom in-house process equipment.
  • Blenders
  • Mixers
  • Cookers
  • Conveyors
  • Food
  • Pharmaceutical
  • Chemical
  • Plastics, metals
  • Other bulk process industries
 MECO PACMECO®-PACThe MECO-PAC is an elastomer-driven, MECO seal designed to replace packing in stuffing boxes. It is used primarily in airlocks and rotary valves, where no installation clearance exists for an externally-mounted seal.

Like other MECO seals, the MECO-PAC seals on a plane perpendicular to the shaft, eliminating abrasive damage to the shaft caused by packing or lip seals. The MECO-PAC has proven effective in maintaining pressure differential across airlocks, without the frequent adjustments required by packings.
MECO-PAC seals should only be used in applications where there is no possibility of installing an external seal. 
 MECO Marine Sea GardMECO® Marine Sea GardThe SEA-GARD provides an effective rudder post seal in abrasive, coastal waters. Wear materials are softer than those used in traditional mechanical seals, and permit the use of wide-radius seal faces. These easily tolerate severe eccentric rotation and permit wear to occur without compromising the seal.

  • Elastomeric Drive Design Tolerates Shock Loads & Radial Eccentricity
  • Will Not Open Up Like Packing
  • Long Service Life
  • Fully-Split Designs Facilitate Easy Installation & Rebuild

  •  Marine applications
 
  • Marine Industry
 MECO Torque TubeMECO® Torque TubeA precision Wera adjustable torque screwdriver offers accurate and repeatable adjustment of the HC seal's clamp. TheTorque Tube kit includes the needed 7mm nutsetter for engaging the clamp head, as well as 6” and 10” bit extensions to facilitate access to the clamps in all sizes of HC seals, with instructions, packaged in a convenient plastic tube. The tools are also available individually.
  •  Adjusting HC Model seals
 

 

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