This is a V-Ring Seal designed for hydraulic pumps. It is made of HNBR. Its hardness is 70±5°A. It features a regular circular annular structure with a V-shaped cross-section. The annular side presents a "V"-shaped protrusion. The ring body has uniform thickness across the whole part.Benefiting from its 70±5°A hardness, it combines structural rigidity with elastic tension. It boasts precise, consistent dimensions. It can perfectly fit the sealing mounting grooves of hydraulic pumps.As a core pressure-resistant sealing component for fluid power systems, it complies with the stringent standards of Pressure Seal Components and Sealing Elements for Valves. It is fully compatible with the application requirements of Micro Sealed Hydraulic Pump and Sealed Fluid Transfer Pump.
Product Features
1.Functions
1)High-Pressure Sealing & Leak PreventionIt serves as a core sealing component of hydraulic pumps. The V-shaped cross-section structure can tightly fit the sealing groove and mating surface under the pressure of hydraulic oil. It fills gaps between components. It effectively blocks the leakage of high-pressure hydraulic oil (typically operating pressure ranging from tens to hundreds of MPa) at pump bodies, shafts or pipeline joints. It ensures pressure stability of the hydraulic system. It avoids oil waste and equipment contamination. This sealing performance meets the rigorous demands of Mini Sealed Valve and Sealed Fluid Direction Control Valve for high-pressure fluid systems.
2)Internal Component ProtectionIt forms a sealing barrier. It blocks external dust, moisture and impurities from entering the hydraulic pump interior. It protects precision moving components such as plungers, gears and bearings from wear and corrosion. It extends the service life of the hydraulic pump.
3)Adaptation to Dynamic Sealing ScenariosThe combination of V-shaped structure and HNBR material elasticity enables it to adapt to dynamic working conditions such as shaft rotation and piston reciprocating motion of hydraulic pumps. It maintains tight fit even when components move relatively. It achieves continuity and reliability of dynamic sealing.
2.Performance Characteristics
1)HNBR Material for Hydraulic Environment CompatibilityIt is made of hydrogenated nitrile butadiene rubber (HNBR). It boasts excellent oil resistance, weather resistance and anti-aging properties. It can withstand long-term erosion by hydraulic oils (mineral oil, synthetic oil, etc.). There will be no swelling, cracking, stickiness or performance degradation. It perfectly adapts to the medium environment of hydraulic systems. This material property aligns with the standards of Fluid-Tight Diaphragms and Diaphragms & Sealing Gaskets for fluid handling equipment.
2)70±5°A Hardness Balances Sealing Performance and Wear ResistanceThe medium-high hardness setting ensures structural rigidity of the seal ring. It prevents excessive deformation under high pressure. It enables stable filling of sealing gaps. It also retains moderate elasticity. It adapts to minor deformation during component movement. It enhances surface wear resistance at the same time. It reduces friction loss under dynamic working conditions. It extends service life.
3)V-Shaped Cross-Section Enhances Sealing EffectThe V-shaped cross-section design utilizes the self-tightening effect of hydraulic oil pressure. The higher the pressure, the tighter the fit between the V-shaped surface and the sealing surface. Sealing performance is enhanced with increasing pressure. It adapts to the full working conditions of hydraulic pumps from low-pressure startup to high-pressure operation. It delivers superior sealing reliability compared to ordinary flat gaskets or O-rings.
4)Regular Structure for Strong AdaptabilityThe annular body features uniform thickness and clear V-shaped edge contours. Its dimensions precisely match the standard sealing grooves of hydraulic pumps. Stacking multiple rings can further improve the sealing grade. It is easy to install at the same time. It avoids assembly deviations caused by irregular structures. This structural advantage complies with the quality standards of Gasket & Membrane Assemblies and integrated fluid sealing systems.
3.Application Scenarios
1)Sealing for Various Hydraulic PumpsIt is suitable for static or dynamic sealing of different types of hydraulic pumps including piston pumps, gear pumps and vane pumps. It is applicable to pump shafts, pump body end covers, oil outlet joints and other parts.
2)Key Parts of Hydraulic SystemsIt is ideal for industrial hydraulic equipment (such as hydraulic machine tools, construction machinery hydraulic systems), heavy machinery hydraulic circuits, hydraulic power units and other scenarios. It is especially suitable for harsh working conditions with high operating pressure and large hydraulic oil temperature fluctuations (-20℃~120℃).
3)Scenarios with Dynamic Sealing RequirementsIt is targeted at dynamic sealing parts of hydraulic pumps such as shaft rotation and piston reciprocating motion. It can replace ordinary seals to achieve more stable high-pressure dynamic sealing.
4.Pain Point Solutions
1)Solving Leakage Problems Under High-Pressure ConditionsOrdinary seals are prone to leakage due to poor fit of sealing surfaces and material deformation under pressure in high-pressure hydraulic pump environments. It affects system pressure and work efficiency. This V-ring seal achieves reliable sealing under high pressure through its self-tightening structure and the pressure-bearing capacity of HNBR material. It completely eliminates leakage.
2)Addressing Wear Failure in Dynamic SealingDue to relative movement of components, ordinary seals are prone to wear and aging at dynamic sealing parts of hydraulic pumps. It leads to sealing failure. The 70±5°A hardness and wear resistance of HNBR material of this seal ring can resist dynamic friction loss. It extends sealing service life.
3)Resolving Insufficient Oil ResistanceOrdinary rubber seals are prone to swelling and degradation after long-term contact with hydraulic oil. They require frequent replacement. HNBR material has strong oil resistance. It can adapt to hydraulic oil environment for a long time. It reduces maintenance and replacement frequency and costs.
4)Solving Poor Sealing AdaptabilityHydraulic pump sealing grooves vary greatly in size and working pressure. Ordinary seals are difficult to meet both static and dynamic sealing requirements. The regular structure and stackable design of this V-ring seal can adapt to different specifications of sealing grooves and pressure conditions. It improves the flexibility of installation and use.
