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DYNAMIC SEAL TESTING SERVICES

In our 7,000-square-foot Dynamic Test Lab are over 25 dynamic test rigs, including two custom inter-shaft rigs. Designed to Stein’s high standards, these rigs can be reconfigured quickly for multiple programs to provide fast, concurrent, cost-efficient testing of our products and any related components for our customers.

Each rig has fully automatic data collection and control via National Instruments hardware and software and can run a fully automated test cycle 24/7. The control computer allows the operator to monitor seal and rig performance in real-time while setting the limits of critical parameters to simulate any operating environment. This lets Stein engineers accurately predict and verify the performance of any mechanical seal under the most extreme conditions it can be expected to face.

INTER-SHAFT RIG FEATURES

Our custom inter-shaft rigs feature two independently controlled spindles that allow testing of inter-shaft seals, such as piston rings.

  • Rotation: 30,000 rpm on the high-speed spindle, 18,000 rpm on the low-speed spindle, counter-rotating or co-rotating
  • Seal Air: 150 psi, 850°F, 120 SCFM
  • Runner/Seal Oil
  • 100 psi, 250°F, 5 GPM
  • Dynamic temperature monitoring of outer shaft via infra-red pyrometers.
Testing

GENERAL TEST CAPABILITIES

  • Seal Diameters: up to 60 cm (24 inches)
  • Shaft Speeds: up to 70,000 rpm
  • Oil Pressures: up to 30,000 KPa (4,000 psi)
  • Gas Pressures: up to 20,000 KPa (3,000 psi)
  • Temperatures: up to 815° C (1,500°F)
Testing

DYNAMIC TESTING LAB

Our seal testing expertise and equipment are available for a fee to outside companies for their own testing needs.

TESTING IN ACTION

By testing our circumferential hydrogen generator seal under simulated real-world operating conditions, Stein engineers concluded that our design effectively eliminated leakage and shaft rub damage. This represented a considerable advantage in terms of increased operational efficiency and a dramatic reduction in maintenance costs for the power industry.