ST1592-12

SEAL
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About this product
The ST1592‑12 is a precision face seal used to prevent fluid and gas leakage in critical engine and hydraulic assemblies, particularly in Pratt & Whitney turbomachinery and accessory gearboxes. Manufactured to exacting tolerances from aerospace‑grade elastomer and metal reinforcement, it maintains a robust seal under high pressures and temperatures, ensuring system integrity and safety.
ST1592-12 Datasheet
UOM: EA
Stock Location: Dubai
Hazardous Item: Non-Hazardous Item
Life Limited Part: No
Lead Time: Stock
Certification: TRACE
8130/EASA Eligible: No
PRODUCT DESCRIPTION

ST1592-12

  • Metal Backing Ring: Incorporates a stainless‑steel insert to prevent extrusion and maintain seal geometry under high differential pressures.

  • Ultra‑Tight Dimensional Tolerances: Machined to ISO 3601‑3 class BH specifications, ensuring consistent compression set and minimal leakage paths.

  • Low Friction Coating: Advanced PTFE-based surface treatment reduces wear against mating shafts and housings, extending service life.

  • Vibration and Pressure Pulse Resistance: Designed to remain leak‑tight in environments experiencing rapid pressure fluctuations and vibration spectra up to 50 g rms.


  • Preventing bleed‑air leaks in environmental control system valves and ducts.

  • Retrofitting hydraulic pump and actuator assemblies on regional and business jets.

  • Replacing worn face seals in rotary joints and swivel unions on engine accessory drives.

  • Integrating into maintenance kits for scheduled C‑check and D‑check overhauls.

  • How do I verify the correct seal fit?

Match the part number and cross‑check the seal’s inner and outer diameters and cross‑section against the OEM Illustrated Parts Catalog.

  • What is the recommended installation practice?

Lightly lubricate the seal with the system’s native fluid before installation, ensuring even seating without twisting.

  • What are the signs of seal failure?

Look for external oil seepage, rising hydraulic reservoir levels, or pressure decay in leak‑down tests to indicate seal wear or hardening.


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