As a massive-profile evolution of standard seals, VAX rings feature an increased cross-section that provides superior rigidity and resistance to high radial loads. Engineered for long-term operation in harsh environments, the unique design ensures stable sealing at speeds exceeding 3,000 rpm, where conventional rings fail due to centrifugal forces.
The VAX rings for high-speed rotating equipment are available in diameters from 200 mm to 2000mm. They are the definitive heavy-duty axial shaft seals, providing maximum protection against scale, water, and abrasives in rolling mill machines.
Technical Advantages
Dynamic Stability: Engineered with a unique stress distribution to prevent lip lift-off at speeds exceeding 3,000 rpm—essential for V-ring for high-speed rotating equipment.
Total Bearing Protection: Functions as a robust heavy-duty axial shaft seal for large bearings, shielding internal components from mill scale, abrasive dust, and cooling fluids.
Axial Flexibility: Automatically compensates for shaft misalignment, axial run-out, and vibrations without compromising the seal interface.
Cost Efficiency: Dramatically extends the service life of primary seals and bearings by preventing early contamination failure.
Material Specifications & Technical Data
We supply VAX rings in a wide range of high-performance elastomers to ensure compatibility with your specific application requirements:
NBR (Nitrile Butadiene Rubber)
Temperature: -40°C to +100°C.
Features: Exceptional resistance to mineral oils, greases, and hydraulic fluids. Known for high elasticity and wear resistance.
Application: The standard choice for VA and VL type seals in automotive and general pump/bearing applications.
FKM (Viton™ / Fluoroelastomer)
Temperature: -20°C to +200°C.
Features: Superior resistance to high temperatures and aggressive chemicals, including synthetic oils, acids, and alkalis.
Application: Critical for industrial V-ring seals for heavy machinery operating in high-heat or corrosive chemical zones.
VMQ (Silicone Rubber)
Temperature: -60°C to +200°C.
Features: Renowned for exceptional flexibility and thermal stability. It maintains constant elasticity across extreme temperature fluctuations.
Application: Ideal for food-grade, medical, or outdoor systems requiring reliable performance under severe weather or temperature variations.
HNBR (Hydrogenated Nitrile)
Temperature: -40°C to +150°C.
Features: A hydrogenated modification of NBR that significantly boosts oxidation, chemical, and temperature resistance while retaining excellent oil compatibility.
Application: Used in high-pressure oil equipment and chemical pumps where NBR falls short.
EPDM (Ethylene Propylene)
Temperature: -40°C to +150°C.
Features: Outstanding resistance to water, steam, ozone, and weathering. It is the premier choice for non-oily media.
Application: Widely used in water treatment facilities, HVAC, and humid environments where steam resistance is mandatory.
VAX Rings Applications
Metal Production: Protecting work rolls and back-up rolls in rolling mill machines from cooling water and scale.
Renewable Energy: Main shaft sealing for wind turbines.
Heavy Industry: Paper machinery suction rolls and heavy-duty grinding mills in quarries.
Installation Diagrams
VAX Rings Size (mm)
| Name | d (ID) | D (OD) | H | d1 (Shaft Dia.) | h | c | d2 (Max) | d3 (Min) |
| VAX-200 | 192 | 227.6 | 31 | 200–205 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-205 | 196 | 231.6 | 31 | 205–210 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-210 | 200 | 235.6 | 31 | 210–215 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-215 | 204 | 239.6 | 31 | 215–219 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-220 | 207 | 242.6 | 31 | 219–224 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-250 | 227 | 262.6 | 31 | 240–250 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-300 | 275 | 310.6 | 31 | 292–303 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-400 | 360 | 395.6 | 31 | 390–415 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-450 | 410 | 445.6 | 31 | 443–480 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-500 | 450 | 485.6 | 31 | 480–530 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-600 | 540 | 575.6 | 31 | 580–630 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-800 | 745 | 780.6 | 31 | 785–830 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1000 | 910 | 945.6 | 31 | 965–1015 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1500 | 1360 | 1395.6 | 31 | 1470–1520 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1550 | 1405 | 1440.6 | 31 | 1520–1570 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1600 | 1450 | 1485.6 | 31 | 1570–1620 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1650 | 1495 | 1530.6 | 31 | 1620–1670 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1700 | 1540 | 1575.6 | 31 | 1670–1720 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1750 | 1585 | 1620.6 | 31 | 1720–1770 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1800 | 1630 | 1665.6 | 31 | 1770–1820 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1850 | 1675 | 1710.6 | 31 | 1820–1870 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1900 | 1720 | 1755.6 | 31 | 1870–1920 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-1950 | 1765 | 1800.6 | 31 | 1920–1970 | 17.3 | 17.8 | d1+12 | d1+50 |
| VAX-2000 | 1810 | 1845.6 | 31 | 1970–2020 | 17.3 | 17.8 | d1+12 | d1+50 |
QZSEALS is a specialized V-ring manufacturer in China, providing a comprehensive range of high-precision axial seals, including standard profiles such as VA, VAX, VS, VE, and VL. Every VAX rings we produce is manufactured to strict ISO 3601-3 tolerances, ensuring reliable performance in the most demanding industrial applications.
With over 16 years of expertise in custom-size solutions and high-performance compounds, QZSEALS delivers premium industrial V-ring seals for heavy machinery that guarantee long-term durability and precision. We combine factory-direct pricing with professional technical support to meet the global demand for high-quality sealing solutions.
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