Industrial Rubber Bellows RBT-12 – Robust Sealing for Rotating Equipment
Industrial Rubber Bellows RBT-12 – Robust Sealing for Rotating Equipment
Overview
HydroMax Seal RBT-12 | Rubber Bellows Component Seal with Single Parallel Spring
The RBT-12 is a single-spring, rubber-bellows component seal designed for versatility and ease of installation. Featuring a parallel spring and friction-drive collar, it provides reliable torque transmission from the shaft to the seal faces. The seal includes a monolithic face and is supplied with a stationary seat as standard.
Dimensionally equivalent to the Burgmann MG12, the RBT-12 is a proven solution for general-purpose pump sealing across various industries.
Product Description
Design Features
- Parallel single spring with rubber bellows for compact, self-aligning operation
- Friction-drive collar ensures dependable shaft engagement
- Monolithic seal face for increased thermal and mechanical stability
- Supplied with the stationary seat as standard
- Fully interchangeable with the Burgmann MG12 design
- Ideal for clean water, light chemicals, and general service applications
Technical Specifications
| Seal Shaft Sizes | 0.47” – 2.17” |
| Inboard Seal Face Combinations | Car/SiC Car/Cer SiC/SiC |
| Bellows Material | EPDM |
| Shaft Speeds | Up to 10 m/s |
| Pressures | Up to 12 Barg (174 psig) – Shaft Size Specific |
HydroMax Seal RBT-12 offers a durable, OEM-equivalent sealing solution for pumps that require low maintenance and consistent performance.
Typical Applications & Industry Use Cases
The RBT-12 Rubber Bellows Mechanical Seal is a simple, robust internal wet seal featuring an elastomeric bellows element. It is designed to provide reliable sealing in a wide range of general industrial pump applications. The rubber bellows isolates all dynamic moving parts from the process fluid, simplifies installation, and compensates for minor shaft misalignment, making it suitable for everyday services where cost-effective, dependable sealing is required.
Industries Served
Water and wastewater treatment
HVAC and building services
Industrial process pumping
Agricultural and irrigation systems
General utility and fluid transfer services
Light chemical processing
Equipment & Use-Case Scenarios
- Parallel-shaft centrifugal and process pumps handling clean to moderately contaminated liquids
- Internal wet applications where process fluid provides adequate lubrication to seal faces
- Services with low to moderate pressure and temperature conditions
- OEM replacement and routine maintenance in general pumping systems
Why It Fits These Applications
- Elastomeric bellows: Isolate dynamic components from the sealed fluid and compensate for shaft movement
- Simple, rugged design: Well-suited for standard industrial services and fluid transfer applications
- Internal wet configuration: Offers reliable sealing where process fluid provides lubrication and cooling
- Tolerance for minor misalignment: Bellows flexibility accommodates slight shaft run-out without compromising performance
- Cost-effective solution: Ideal for applications that do not require complex support systems or aggressive duty sealing
Installation Guidelines
Pre-Installation Preparation
Clean and inspect the pump shaft, seal chamber bore, and gland area. Remove corrosion, debris, and surface defects to ensure smooth contact surfaces and proper alignment.
Seal Installation
Slide the RBT-12 seal onto the shaft into the seal chamber. Ensure the elastomeric bellows and seal faces are correctly oriented relative to the shaft and housing. Check that the bellows are not twisted or compressed unevenly.
Orientation Check
Confirm that the seal’s orientation matches the intended direction of shaft rotation and fluid flow as applicable.
System Readiness
Verify that the seal chamber is flooded with process fluid, if required by your application, and that all components are securely positioned before starting the equipment.
Maintenance & Inspection Best Practices
- Routine Visual Checks: Periodically inspect the seal area for signs of leakage, unusual vibration, or temperature variation
- Bellows Integrity: During scheduled maintenance, check the elastomeric bellows for cracks, deformation, or loss of elasticity
- Seal Face Condition: Examine seal faces for wear, scoring, or build-up of deposits
- Operating Logs: Track operating conditions such as pressure, temperature, and shaft speed to support maintenance planning
- Spare Parts Inventory: Keep replacement bellows seals and secondary components on hand to reduce downtime during routine servicing
Service & Support Options
- Application Review: Confirm that elastomer materials and face combinations are suitable for your fluid chemistry and operating conditions
- Installation Assistance: Support can help ensure correct orientation and seating for reliable performance
- Preventive Maintenance Planning: Establish inspection intervals and parts replacement schedules based on duty cycles and operating history
- Seal Upgrades: If conditions become more demanding (higher pressures, temperatures, or abrasive fluids), evaluate alternative designs or materials to maintain performance
Related Products
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
