Low Seating Stress Gaskets

Low Seating Stress Gaskets
Durlon® low seating stress gaskets are engineered to provide reliable seals at lower bolt loads, making them the right choice for fragile flange and equipment designs where excessive clamping force can cause damage. Available in a range of gasket material types, each product in this category maintains operational integrity without placing unnecessary stress on the flange assembly.

Need High-Performance Sealing Solutions?

Request A Quote | View Durlon Gasket Manual

What Are Low Seating Stress Gaskets?
Low seating stress gaskets are sealing components designed to achieve an effective seal at significantly lower bolt loads than standard gaskets. This is critical in applications where the flange, equipment casing, or connecting material is fragile, lightweight, or prone to deformation under high clamping force. By reducing the seating stress required, these gaskets protect both the flange face and the sealing surface while maintaining leak-free performance.

How low seating stress gaskets are designed:
• The contact area between the gasket and flange face is reduced or profiled to concentrate the sealing load.
• Materials are selected for high compressibility and conformability at lower bolt torque.
• Corrugated or reduced-contact profiles (CFG, RCA) allow tight sealing without full-face bolt load.
• Low seating stress gasket sheets are available for cut-to-size fabrication to match specific flange dimensions.
• No heavy clamping equipment is required during installation.

Key performance advantages:
• Effective sealing at lower bolt loads, reducing installation time and risk.
• Protects fragile or composite flange materials from deformation and cracking.
• Broad low seating stress gasket material options, including EPDM, Viton®, and corrugated metal.
• Long-term sealing reliability in low-pressure, low-temperature environments.
• Compatible with lightweight and non-metallic flange assemblies.

Low Seating Stress Gaskets Material For Demanding Applications
The low seating stress gasket material used across the Durlon® range is selected for its ability to maintain sealability under reduced bolt load conditions. The LT series products use EPDM and Viton®-based formulations, while the CFG gasket uses a thin metal core with corrugated peaks. Each material is tested to meet the performance requirements of chemical processing, power generation, and general industrial applications. Download the relevant Product Data Sheets for full material specifications.

Gasket Spiral Wound Alternatives: CFG and RCA Sealing Solutions
For applications where a spiral wound gasket would apply too much load to a lightweight or composite flange, Durlon® offers the CFG (Corrugated Faced Gasket) and RCA (Reduced Contact Area) gasket as engineered alternatives. The CFG features a thin metal core with corrugated peaks that provide high sealability with minimal surface pressure. The RCA limits the contact area with the flange surface, achieving an effective seal with significantly lower bolt torque and reducing the risk of flange face damage.

Typical industry uses:
• Chemical processing — flanged connections in fragile or lined piping systems.
• Power generation — low-pressure steam and condensate services.
• Pharmaceutical and food & beverage — lightweight equipment flanges.
• OEM applications requiring low seating stress gasket sheets cut to custom dimensions.
• General industrial applications with glass-lined, FRP, or composite flange materials.

Trust Durlon® for low seating stress gaskets engineered to protect fragile flanges and maintain long-term sealing reliability. Our engineering team is ready to assist with material selection, custom fabrication, and technical support for your application. With over four decades of sealing expertise, Durlon® is your partner for critical sealing solutions.

Contact us today to find the right low seating stress gaskets for your application and ensure a secure, long-lasting seal.