Every DUO-CONE mechanical face seal is the outcome of specialised metallurgy, proprietary centrifugal casting, precision lapping and rigorous elastomer formulation, designed to resist abrasive slurry, extreme load and high sliding velocities.
Live optical sensor feed · 4K metrology01Lapped mirror face< 0.13 µm Ra flatness02Ni-Hard alloy matrix60 – 70 HRC martensitic03Toric elastomerISO 3601 calibratedPick a component to see how complementary mechanical forces guarantee zero leakage under high particulate intrusion.
Engineered to withstand direct contact against hyper-abrasive quartz, crushed granite and coal slurry. The hardened carbide network holds hardness under sustained friction temperatures above 200 °C.
From molten-alloy centrifugal pouring to optical helium testing, every phase reflects rigorous German manufacturing standards.
Phase [01/06]1600 °C inductionMolten Ni-Hard cast iron is spun into cylindrical dies at thousands of RPM. Centrifugal force drives out air pockets and voids, pushing impurities to the bore for an ultra-dense, homogeneous carbide microstructure.
Phase [02/06]2 helium light bandsRobotic CNC lathes profile the sealing contours to micrometre repeatability. Three-stage orbital lapping with diamond slurry then yields a mirror finish, verified by monochromatic light-band interferometry.
Phase [03/06]Vulcanisation press · NBR & FKMToric rings are formulated and moulded under strict temperature cycles for uniform elasticity, minimal compression set and long-term axial spring load across thermal swings.
Phase [04/06]Centerless grinding · ±0.005 mmCenterless external, bore and face grinding hold tight diametrical concentricity. This kills wobble and prevents localised toric pinching under shock loading.
Phase [05/06]Vacuum furnace · cryogenicTailored metallurgical transformation delivers the exact balance of core shatter toughness and contact-face abrasion resistance.
Phase [06/06]Tribological coating · MoS₂ & WS₂Electrochemical and dry-film tribological treatments guard against corrosion, fretting wear and dry-startup galling.
Continuously testing metallurgy under extreme simulation inside our Engelskirchen facilities.
Balanced micro-groove profiles that channel cooling oil into hydrodynamic film barriers during high-RPM continuous transit.
Lifecycle algorithms simulating quartz sand, taconite and mud ingress to predict seal-envelope failure before it happens in the field.
Polymer chains formulated to resist permanent compression set across sub-zero arctic and ultra-high desert thermal swings.
Plasma-sprayed nanoceramic shields across the seal ramp zone to repel dense iron-ore tailings and abrasive gravel buildup.
Refinement of molybdenum and nickel ratios to eradicate micro-chipping while amplifying fracture toughness on heavy track drives.
Which tests we run on every duo cone face seal before it leaves Engelskirchen.
Our senior seal engineers help with custom mould prototyping, CAD cross-referencing, material pairings and express OEM batch production.
Questions, a part number to cross-reference, or a bulk requirement? Our German-based engineering team gives expert guidance and tailored seal solutions, and replies within one business day.
