The DSTI GP Series (General Purpose) Multi-Passage Rotary Unions, engineered and manufactured by Dynamic Sealing Technologies, Inc. (DSTI - USA), represent world-class dynamic fluid sealing technology designed for high-performance automation machinery, heavy equipment, and critical industrial applications.

The comprehensive GP Series accommodates configurations ranging from 1 up to 12 independent flow passages, split into two primary port size families:
1. GP-100 Series (GP-101, GP-102, GP-103, GP-104, GP-106, GP-108, GP-110, GP-112): Configured with standard 1/8"-27 NPT threaded connections (or G1/8" BSPP metric equivalent in GPM models), delivering an ultra-compact footprint ideal for space-restricted pneumatic control circuits and pilot hydraulic lines.
2. GP-200 Series (GP-201, GP-202, GP-203, GP-204, GP-206, GP-208, GP-210, GP-212): Features 1/4"-18 NPT threaded ports (or G1/4" BSPP metric equivalent), providing higher flow throughput required for heavy-duty hydraulic actuation, lubrication, and primary coolant distribution.

Key Features and Operational Advantages:
- Multi-Media Compatibility Without Cross-Contamination: Utilizing DSTI's proprietary dynamic sealing technology, each individual fluid channel remains strictly isolated. This enables the union to transfer entirely different fluid media simultaneously (e.g., compressed air, petroleum-based hydraulic fluid, vacuum, and water-glycol coolant) through a single, compact rotating joint with zero cross-leakage.
- Extreme Performance Envelope: Engineered to withstand demanding operational conditions ranging from deep vacuum levels (30 in. Hg) up to extreme high pressures of 7,500 PSI (515 BAR), while maintaining steady rotational speeds up to 500 RPM.
- Robust Industrial Construction: Housings and shafts are precision-machined from premium carbon steel and finished with a durable black oxide protective coating, ensuring maximum wear resistance, corrosion protection, and friction reduction during continuous production cycles.
- Dual High-Precision Bearings: Supported by heavy-duty sealed deep-groove ball bearings designed to absorb substantial radial and thrust loads, maintaining precise concentric alignment and significantly extending dynamic seal life.
- Versatile System Integration: GP Series unions offer seamless integration with electrical slip rings for combined fluid and power/data/Ethernet transmission, or can be supplied with a central Through-Bore configuration for coaxial drive shaft mounting.

Typical Industrial Applications:
- Automated indexing tables, rotary tables, and multi-axis CNC machine centers.
- Precision hydraulic and pneumatic workholding and clamping fixtures.
- Industrial robotics, end-of-arm tooling (EOAT), and automated assembly lines.
- Plastic injection molding machines and blow molding equipment.
- Heavy-duty umbilical hose reel systems and cable reeling drums.

• Manufacturer: DSTI (Dynamic Sealing Technologies, Inc.)
• Origin / Country of Manufacture: USA
• Product Series: GP Series General Purpose Multi-Passage Rotary Unions
• Models Covered: GP-101, GP-102, GP-103, GP-104, GP-106, GP-108, GP-110, GP-112, GP-201, GP-202, GP-203, GP-204, GP-206, GP-208, GP-210, GP-212
• Number of Flow Passages: 1, 2, 3, 4, 6, 8, 10, and 12 independent passages
• Nominal Passage Sizes:
  - GP-100 Group: 1/8" NPT (Passage diameter approx. 0.156" / 3.96 mm)
  - GP-200 Group: 1/4" NPT (Passage diameter approx. 0.250" / 6.35 mm)
• Connection Standards: Standard NPT female threads (BSPP metric thread optional on GPM models)
• Maximum Working Pressure: Up to 7,500 PSI [515 BAR]
• Maximum Vacuum Rating: 30 in. Hg
• Maximum Rotational Speed: 500 RPM
• Operating Temperature Range: -18°C to 105°C (0°F to 220°F) (High-temperature seal options available upon request)
• Housing Material: Carbon Steel with Black Oxide Finish
• Shaft Material: Carbon Steel with Black Oxide Finish
• Dynamic Sealing Technology: DSTI proprietary PTFE-based elastomeric composite seals
• Bearing Support: Dual precision sealed deep-groove ball bearings
• Compatible Media: Compressed Air, Inert Gases, Petroleum-based Hydraulic Fluids, Water/Glycol, and Coolants containing rust inhibitors.
• Shaft Mounting Configurations: Standard threaded side/shaft connections, optional O-ring face seal glands for flush interface mounting.