Rubber Bellow Seals
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Rubber Bellow Seals
Flexible, Economical Sealing with Rubber Bellows for General Industrial Applications
At GSI – Globe Seal Industries, we design and manufacture high-quality rubber bellow seals that deliver dependable sealing performance across a wide range of low to medium-duty applications. Known for their simplicity and versatility, these seals are an ideal choice for water, wastewater, light chemical, and general industrial services where cost-effective, maintenance-friendly solutions are required.
Product Overview
Rubber bellow seals feature an elastomer bellows that acts both as a dynamic secondary seal and a mechanical drive element. This innovative design eliminates the need for traditional springs or complex drive collars, reducing the overall number of components and simplifying maintenance.
Their self-aligning capability allows these seals to handle minor shaft deflections and misalignments without compromising sealing integrity, making them especially suitable for older or less precisely machined equipment.
Key Features
✔ Elastomeric Bellows Construction: Bellows provide axial flexibility and self-adjust to compensate for shaft runout or misalignment.
✔ Drive-Through Bellows: The elastomer bellows transmits torque directly to the rotating seal face, eliminating extra drive pins or clips.
✔ Compact & Simple Design: Easy to install without special tools, and fits into standard stuffing boxes.
✔ Available in Unbalanced Configurations: Ideal for low to medium pressures, reducing costs and simplifying maintenance.
✔ Handles Both Shaft Rotations: Works with clockwise or counter-clockwise rotating shafts, streamlining inventory requirements.
✔ Field-Replaceable Faces & Bellows: Simplifies repairs and reduces lifecycle costs.
Materials of Construction
GSI rubber bellow seals are engineered with robust materials matched to your process fluids and temperatures, including:
Bellows Elastomers: Nitrile (Buna-N) for water and general services, EPDM for mildly corrosive or hot water, Viton (FKM) for light chemical and higher temperature applications
Seal Faces: Carbon, Ceramic, Silicon Carbide, or Tungsten Carbide, chosen for the nature of your fluid and operating parameters
Metal Hardware: SS 304 or SS 316 for corrosion resistance in standard industrial environments
This allows customization for your specific application requirements and budget.
Applications
Our rubber bellow seals are widely used across industries for sealing duties such as:
Water & Wastewater Pumps
General Industrial Utility Pumps
Cooling Water Circulating Systems
Agricultural & Irrigation Equipment
Light Chemical Transfer Pumps
Food & Beverage Auxiliary Applications
Benefits of Choosing GSI Rubber Bellow Seals
✅ Cost-Effective Sealing Solution: Highly economical option for non-critical, low to medium pressure applications.
✅ Accommodates Misalignments & Shaft Runout: The flexible bellows adjust automatically, reducing installation precision requirements.
✅ Simple Installation & Replacement: Few components and no complex drive mechanisms make installation quick and easy.
✅ Low Inventory Complexity: Works with either shaft rotation, minimizing the need for multiple seal models.
✅ Reliable Performance for Everyday Duties: A proven solution for thousands of general service pumps worldwide.