In today’s industrial landscape, where reliability, safety, and leak prevention are at the heart of mechanical design, bonded seals have proven themselves as indispensable components. Known for their ability to provide static sealing in high-pressure environments, the bonded seal series—which includes both self-centering bonded seals and non-self-centering bonded seals—has become a preferred solution across a wide array of sectors. DEDE, a brand rooted in deep technical expertise and manufacturing capability, delivers a comprehensive bonded seal offering that integrates performance, versatility, and responsive service.
· Understanding the Bonded Seal Series: Design and Types
Bonded seals are
hybrid gaskets made of a metallic ring (typically carbon steel or stainless
steel) bonded with an elastomer sealing element such as NBR or FKM. This
combination allows them to handle both axial and radial loads while maintaining
a leak-proof connection.
· Self-Centering Bonded Seals are designed with an integrated centering ring, allowing for faster and more accurate installation. They are particularly beneficial in automated production lines or areas where assembly precision is crucial.
Non-Self-Centering Bonded Seals, the traditional form, offer the same pressure resistance but require manual alignment during installation. These are suitable for general-purpose applications where space or cost constraints may apply.
The materials used offer a wide thermal and chemical resistance range:
· NBR: Recommended for temperatures from -40°C to +125°C, compatible with most hydraulic oils and greases.
· FKM: Suitable for temperatures up to +250°C, ideal for chemically aggressive environments.
· Pressure tolerance: Depending on the size and configuration, bonded seals
can typically withstand up to 1500 bar of pressure. And so on nominal pressure: to 40 mpa.
Where Bonded Seals Are Used
Bonded seals are not general-use parts; they
are carefully chosen for static sealing in bolted or threaded connections where
fluid leakage can compromise safety and performance. Here are key industries and
systems where they find application:
· Hydraulic Pumps and Cylinders: Providing reliable sealing in static ports and flange faces.
· Electric Motors and Gearboxes: Used in oil-filled housings where threaded plugs or bolts require sealing.
· Construction and Agricultural Equipment: Where mobile hydraulics are subjected to high pressure and external contaminants.
· Industrial Robots and Automation Systems: Ensuring tightness in compact designs where threaded fluid lines are used.
· Energy and Wind Power Equipment: Bonded seals prevent hydraulic oil leaks that could impact turbine operation or electrical components.
· Trains, Aircraft, and Heavy Vehicles: Used in fuel, brake, and lubrication systems with static high-pressure demands.
As a manufacturer with its own intelligent production facility, DEDE goes beyond supplying standard seals. It offers an end-to-end partnership that begins with consultation and ends with high-precision, application-ready components.
Comprehensive Services Include:
Ready-to-Ship Standard Inventory
With
over 10,000 specifications in stock—including O-rings, shaft seals, and bonded
seals—DEDE supports urgent delivery worldwide, meeting critical demand schedules
for OEMs and MROs alike.
Full-Customization for Non-Standard Seals
Whether it’s selecting an
unusual elastomer for chemical compatibility or designing a new profile for
restricted geometry, DEDE is team assists with material selection, design
validation, and pre-production testing.
Technical Empowerment
Backed by more than 30 years of field experience,
DEDE supports customers with system-level sealing optimization. This results in
improved equipment performance, reduced downtime, and lower maintenance
costs.
What Sets DEDE Apart
The strength of DEDE is rooted in its engineering
capability, production scale, and market trust:
· Operates a full-scale manufacturing facility
· Recognized as a leading sealing brand in domestic and international markets
· Sells to over 80 countries, supplying both OEM and aftermarket sectors
· Certified as a provincial-level innovation enterprise, specialized high-tech manufacturer, and leader in its industrial cluster
· Serves global top-tier brands with reliability and technical transparency
Why Industries Trust Bonded Seals from DEDE
In applications where
vibration, temperature variation, and pressure spikes can challenge seal
integrity, bonded seals provide a compact yet robust solution. When paired with
DEDE’s production capacity and tailored service model, customers gain not only a
reliable product but also a strategic supply partner.
Whether used in a wind turbine’s hydraulic locking mechanism or a locomotive’s brake housing, the right bonded seal from DEDE ensures performance is never compromised.
