01 / Mining · extreme abrasionMining & quarrying
Continuous rotary sealing in slurry, granite dust, quartz sand and mechanical shock for tracked excavators, dumpers and drill rigs.
Inspect specs DIN 3760 · DO type
Industries & applications · DIN 3760 compliant
Engineered for every environment.
Explore the severe-duty industries, drive assemblies and extreme mobile machinery where DUO-CONE mechanical face seals guarantee zero leakage and absolute bearing-cavity isolation.
MetallurgyHigh-chrome cast alloy60 – 66 HRC hardness
Pressure tolerance0.3 to 0.5 MPacontinuous operation
Surface finishRa ≤ 0.2 µm lappedoptical band flatness
Explore by industry
Precision mechanical face seals tailored for abrasive, submerged, high-temperature and continuous impact load profiles.
01 / Mining · extreme abrasion
02 / CivilConstruction
Track rollers, front idlers and slew gearboxes on earthmoving machinery under muddy submersion and vibration.
Inspect specs DO type
03 / AgriAgricultural
Harvesters, power tillers and disc harrows working in fertiliser, clay and moist peat.
Inspect specs DO · NBR toric
04 / RecycleRecycling
Severe particulate protection for industrial shredders, compactors and balers.
Inspect specs DF type
05 / Forestry harvestForestry machinery
Stops wrapping fibres, damp peat loam and acidic timber sap from reaching axle planetary drives and wheel-hub seals.
Inspect specs DIN 3760 · DO
06 / DefenseMilitary & defense
High-reliability track suspension arms, final-drive wheel hubs and amphibious vehicles across −40 °C to +55 °C.
Inspect specs DF · FKM springs
07 / Heavy eng componentsDrive components & gearboxes
Direct OEM replacement for final drives, transfer cases, central rotary joints and vertical roller-mill planetary reducers.
Inspect specs DO · DIN 3760
08 / CementCement milling
High-temperature protection against ultra-fine clinker dust and silica-powder ingress.
Inspect specs DF · high heat
09 / WaterWaste water treatment
Corrosive fluid and slurry decanters, submerged agitators and filter-press drives.
Inspect specs DF · acid resist
10 / ChassisUndercarriage systems
Forged steel track rollers, carrier rollers and front-idler bearing housings with oil-filled-for-life cavities.
Inspect specs DO · standard OEM
11 / Pumps & fluid handlingHeavy industrial pumps
Zero-leakage face sealing for abrasive dredge pumps, mineral slurry transport, high-viscosity gear pumps and screw feeders.
Inspect specs DO / DF · to 0.5 MPa
12 / High-criticality specTunnel boring machines (TBM)
Subterranean disc cutters, main-drive centre bearing chambers and hyperbaric face seals for up to 5.0 bar hydrostatic head.
Inspect specs DF · diamond ring
Explore the application range
12 industries, primary machinery, target sealing cavity, pressure range and recommended product path.
| # | Industry | Primary machinery | Sealing cavity | Pressure | Recommended type |
|---|---|---|---|---|---|
| 01 | Mining | Hydraulic excavator, shovel, dumper | Final drive hub · slew gear | 0.3 – 0.5 MPa | DO · 15Cr3Mo |
| 02 | Construction | Crawler dozer, compactor, crane | Track roller · tension idler | 0.3 MPa | DO · cast alloy |
| 03 | Agricultural | Combine harvester, heavy tiller | Bogie hub · rotor journal | 0.2 – 0.3 MPa | DO · NBR toric |
| 04 | Recycling | Scrap baler, granulator | Shredder drum · ram pivot | 0.4 MPa | DF · trapezoidal |
| 05 | Forestry | Timber harvester, forwarder | Tandem bogie axle spindle | 0.3 MPa | DO · hardened |
| 06 | Military | Tracked IFV, battle tank, logistics | Road-wheel hub · portal axle | 0.4 – 0.5 MPa | DF · FKM springs |
| 07 | Heavy components | Planetary drives, reducers | Output flange · central joint | 0.3 MPa | DO · DIN 3760 |
| 08 | Cement milling | Vertical roller mill, ball mill | Roller trunnion · drive reducer | 0.4 MPa | DF · high heat |
| 09 | Waste water | Decanter centrifuge, aerator | Rotating bowl spindle | 0.3 – 0.5 MPa | DF · acid resist |
| 10 | Undercarriage | Track rollers, carrier rollers | Internal oil-reservoir cavity | 0.3 MPa | DO · standard OEM |
| 11 | Pumps & valves | Slurry centrifugal, screw pump | Impeller shaft bearing housing | 0.5 MPa | DO / DF combination |
| 12 | Tunnel boring | TBM cutterhead, screw conveyor | Main bearing · disc-cutter hub | 0.5 MPa (5 bar) | DF · diamond elast |
From machine to seal
Engineering integrity through three physical stages: the mobile chassis, the planetary gear housing and the optical-precision seal interface.
Stage 01 · macro environmentThe machine
Massive structural chassis generating severe multi-axial deflection and continuous vibration.
Ambient: −40 °C to +55 °CStage 02 · reduction systemThe hub component
High-torque planetary hub reducer needing absolute lubrication retention and a mud barrier.
Dynamic shaft deflection: ±0.5 mmStage 03 · contact interfaceDUO-CONE face seal
Twin cast-alloy rings lapped within 2 optical light bands form a hydrodynamic film that never fails.
Contact band: Ra ≤ 0.2 µmFound your application?
Two proven configurations to match standard OEM housing profiles or direct square-bore press fits.
DO type · toric O-ringStandard OEM
- Elastomer section
- Toric / circular O-ring
- Housing profile
- Ramped 8° – 15° chamfered cavity
- Max pressure
- 0.3 MPa (3.0 bar)
- Diameter
- 50 mm to 1,000 mm
- Typical machinery
- Track rollers, front idlers, final drives
DF type · diamond springHigh pressure
- Elastomer section
- Diamond / trapezoidal gasket
- Housing profile
- Straight cylindrical bore (no ramp)
- Max pressure
- 0.5 MPa (5.0 bar)
- Diameter
- 100 mm to 1,200 mm
- Typical machinery
- TBM cutters, heavy conveyors, centrifuges
Find the right seal for your application.
Our German application engineers provide CAD step files, cross-reference dimensional validation and rapid express quotes.