Expansion joints

Rubber Expansion Joints

Available materials for highFLEX SFR rubber expansion joints:

Neoprene
EPDM
Butyl
Nitrile
Hypalon^®
Viton^®
Natural rubber
It is also possible to combine different elastomers as inner and outer layers for individual expansion joint types

Possible designs:

Sealing surface for rotating flanges, both ends with hardened steel insert
Loose-type flange with groove according to DIN PN 10/16 or ANSI 150 lb
Full-face elastomer flanges with fabric reinforcement
Counterflanges with support collar
Female thread connection for DN 15 - 80 mm
Length limiters (tie rods)
Special tie rods for lateral expansion joints
PTFE inner liner
Vacuum support rings/spiral supports

easyFLEX tailor made expansion joints:

These expansion joints are specifically designed for materials handling and weighing applications. They are characterized by low adjustment forces with high pressure resistance/resistance to pressure surges.

Materials (examples):

Silicone rubber – white, red or black
EPDM
Fluoroelastomer (Viton^®)

Inserts (reinforcements – examples):

Polyester fabric
novaTEX^® woven fabric (aramid/Kevlar^®)
isoGLAS^® woven fabric

Support rings:

Internal stainless steel rings
Stainless steel rings bounded to elastomer

Flange design:

Full-face rubber flanges – unpunched, punched
Different connection flanges / bolt hole pattern
Conical shape
Transition from round to angular

Application examples:

Handling of plastic granulate
Scales for coal dust and toner
Transportation of color pigments

Viton^®, Hypalon^® and Kevlar^® are registered trademarks of DuPont.

Application areas:

Exhaust Gas Cleaning Systems
Wastewater Treatment
Strip Galvanizing Lines
Biomass Power Plants
Coating Systems
Fertilizer Production
Dedusting Plants
Filter Systems
Conveyor Systems
Glass Industry
Gas Turbine Power Plants/CCPP
Annealing Plants
Refrigeration
Power Plants
Radiator Bridges
Cooling Towers/Smokestacks
Paint Finishing Systems
Food Industry
Mills
Waste Incineration Plants
Food Industry
Emergency Power Generators
Pumps
Paper Processing
Petrochemical Plants
Pharmaceutical Industry
Process Air Systems
Flue Gas Cleaning Systems
Reduction Furnaces
Residue Incineration
Rail Vehicle Manufacturing
Marine Propulsion and Turbines
Shipbuilding
Vibrating Screens and Vibrating Conveyors
Sintering Plants
Steelmaking
Dryers
Drying Plants
Scales
Ventilators/Induced Draft Systems
Heat Exchangers
Water Treatment Plants
Pulp Production
Cement Plants
Sugar Industry

The expansion joint types, movements, temperature and pressure variations shown are only valid for the values provided in the example.

Rubber expansion joints may have the same construction and movement absorption, but they can be designed with a different material structure for use in different application areas.

highFLEX

Certifications, approvals and tests:

Certificate Quality Mark RAL-GZ 719 Frenzelit Expansion Joints

Certificate SCC Frenzelit Expansion Joints

Certificate DNV Germanischer Lloyd Frenzelit Expansion Joints

Certificate ISO 9001 Quality management

Certificate ISO 14001 Environment management

Certificate ISO 45001 Occupational Health & Safety Management

Certificate ISO 50001 Energy management

Service

Expansion joints must withstand loads like the system component or pipe itself absorb and additional stress, movements, oscillations or vibrations in axial and/or lateral direction – while ensuring operational safety.

You may already have a very good idea what your expansion joint should look like. Or an application that you want to further develop. A partnership with Frenzelit allows you to realize your ideas according to your system-specific requirements.

We offer you the following:
Frenzelit engineers work together with your design department to develop a technically and economically feasible solution that meets your demands. Our experts are at your disposal in all project phases to develop fabric, non-metallic and elastomer expansion joints, PTFE and multi-laminated PTFE expansion joints as well as rubber and metal expansion joints for your system. We are with you every step of the way – from planning and production to installation and maintenance – for the life of your system.

Personal, on-site consulting ensures that your employees stay focused on what they do best, saves valuable resources and gets you the results you need faster. We develop, design or optimize expansion joints in collaboration with your team based on your specifications – so you can rest assured that they will continue to meet tomorrow’s demands. That’s why our motto is “creating hightech solutions”.

Find out more about Frenzelit services