EMD-32 – Durable Teflon Seal for Long-Lasting Performance
EMD-32 – Durable Teflon Seal for Long-Lasting Performance
Overview
HydroMax Seal EMD-32 | Multi-Spring Teflon Bellows Component Seal (4-Slot Design)
The EMD-32 is a multi-spring, external component seal featuring a 4-slot replaceable Teflon bellows design. Engineered for use on parallel shafts, this seal is clamped using a collet system and contains no elastomers, making it suitable for chemically aggressive or high-purity environments.
With a composite glass-filled Teflon (GFT) bellows and monolithic seal face, the EMD-32 provides reliable performance under moderate pressure and temperature conditions. It is supplied as standard with a stationary seat.
Product Description
Design Features
- External seal configuration
- 4-slot replaceable Teflon bellows – chemically resistant, no elastomers
- Multi-spring design for even axial loading
- Collet clamp driven – secure fit to shaft
- Supplied with a monolithic seal face and a stationary seat
- Ideal for corrosion-prone or high-purity applications
Technical Specifications
| Seal Shaft Sizes | 25mm – 50mm (1.000″ – 2.000″) |
| Inboard Seal Face Combinations | GFT/Cer GFT/SiC |
| Bellows Material | Composite GFT (Glass Filled Teflon) |
| Shaft Speeds | Up to 20 m/s |
| Pressures | Up to 5 Barg (73 psig) – Shaft Size Specific |
| Temperatures | Up to 110°C (230°F) |
HydroMax Seal offers a full range of Teflon and metal bellows mechanical seals in various face combinations, configurations, and sizes to meet your sealing needs.
Typical Applications & Industry Use Cases
The EMD-32 Teflon Bellows Mechanical Seal is a high-performance, multi-spring, elastomer-free mechanical seal featuring a composite Teflon (PTFE) bellows design. Engineered for use in parallel-shaft rotating equipment, it provides flexible compliance and high chemical resistance without elastomer secondary seals. This makes the EMD-32 ideal for use in services involving aggressive chemicals, corrosive fluids, or high-purity applications. The seal includes a collet clamp drive and a stationary seat, providing a reliable, durable sealing solution for demanding process environments.
Industries Served
Chemical processing
Water and wastewater treatment
Pharmaceutical and biotechnology production
High-purity and corrosive fluid handling services
Food and beverage manufacturing
General industrial pump and rotating equipment applications
Equipment & Use-Case Scenarios
- External component sealing on parallel-shaft pumps and rotating equipment
- Services with highly corrosive or reactive chemicals
- Applications requiring elastomer-free sealing solutions to prevent material degradation
- Installations where long service life, chemical compatibility, and minimal maintenance are critical
Why It Fits These Applications
- Composite Teflon bellows: Offers excellent chemical resistance and flexible compliance without secondary elastomers, suitable for aggressive and high-purity fluids
- Multi-spring configuration: Ensures even loading across the bellows and seal faces for enhanced reliability under varied conditions
- Collet clamp drive: Provides secure mechanical engagement and consistent torque transfer to the shaft
- Monolithic seal face: Promotes stability, wear resistance, and consistent performance in moderate temperature services
- Supplied stationary seat: Ready-to-install configuration that simplifies assembly in typical seal chambers
Installation Guidelines
Pre-Installation Preparation
Clean and inspect the equipment shaft, seal chamber bore, and gland surfaces. Remove any corrosion, debris, or surface irregularities to ensure smooth, sealed contact and proper alignment.
Seal Installation
Position the EMD-32 seal assembly onto the shaft for external configuration. Confirm that the Teflon bellows, collet clamp, and stationary seat are correctly oriented. Tighten the clamp drive to secure the seal with appropriate torque.
Orientation & Alignment
Verify proper alignment with the shaft centerline and fluid flow direction to avoid uneven loading or premature wear.
Startup Procedure
After installation, introduce the process fluid and gradually bring the system up to operating conditions. Monitor for leakage and stable operation before placing the equipment into full duty.
Maintenance & Inspection Best Practices
- Routine Visual Checks: Inspect around the seal area for signs of fluid leakage, vibration, or abnormal temperature
- Seal Face and Bellows Inspection: During scheduled maintenance, check seal faces, bellows flexibility, and the stationary seat condition for wear, deposits, or degradation
- Bellows Integrity: Assess the Teflon bellows for signs of fatigue, cracking, or deformation
- Operating Logs: Maintain records of pressures, temperatures, shaft speeds, and fluid properties to support performance tracking and predictive maintenance
- Spare Parts Inventory: Keep replacement stationary seats, bellows units, and seal face sets available to reduce service downtime
Service & Support Options
- Application Review: Confirm that bellows materials and face combinations are compatible with the fluid chemistry, temperatures, and pressures of your service environment
- Installation Assistance: Technical support can help ensure correct orientation and secure clamp engagement for reliable performance
- Preventive Maintenance Planning: Establish inspection intervals and parts replacement schedules based on duty cycles and operating history
- Upgrades for Challenging Conditions: If operating demands increase (e.g., higher temperatures, pressures, or more aggressive chemicals), evaluate alternate face materials or enhanced bellows designs to maintain optimal reliability
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Contact HydroMax Seal
Contact HydroMax Seal today for innovative solutions, expert guidance, and over a century of engineering excellence. Your journey to mechanical sealing excellence starts with HydroMax Seal!
E-Mail: sales@hydromaxseal.com
Address: 18511 Beaumont Hwy Building D
Houston, TX
77049
