Rubber Expansion Bellows
Off the shelf and handmade rubber expansion bellows made to order from DN25 to DN3600. Stock sizes available on a 24hr shipping basis.
24hr Shipping
On all stock items ordered.
Mon-Thur by 2pm, 10am Fridays
Design & Manufacturing
Full in-house design & manufacture to EN / ASME / PED.
ISO14001 Accreditation
FlexEJ has an accredited Environmental Management System.
Rubber Expansion Bellows
Rubber bellows expansion bellows (joints) come in a very wide range of sizes, materials and styles. FlexEJ is here to help you select the rubber expansion joint or rubber bellows best suited to your application.
HVAC BSP Union Ends
HVAC Rubber Bellows
Elaflex Rubber Bellows
Safetech Manufactured Bellows
Multiple Restraint Options
FlexEJ’s extensive UK stock of HVAC and Elaflex rubber bellows allows many requirements for rubber expansion joints to be met immediately. Safetech manufactured to order rubber bellows expansion joints complete our unrivalled range.
PRODUCT GUIDES
RUBBER BELLOWS
WHAT IS A RUBBER EXPANSION BELLOW?
Things to consider….
Materials
12 different rubber compounds for the bellows.
Application
Water, oils, chemicals, foods, gases – we have a solution.
Rating
-40°C up to +150°C, typically PN6 to PN16.
Web Shop
Many available online with next day delivery from our web shop.
Selecting Rubber Expansion Joints​
Rubber expansion joints come in three main styles:
- Swivel Flange, single arch, rubber bellows which are moulded and available in specific lengths.
- Full Face rubber expansion joints which are made to order with 1-4 arches.
- Twin Sphere rubber joints which are moulded with 2 arches and supplied with BSP ends.
FlexEJ’s Rubber Bellows
We have three distinct ranges of rubber bellows:
HVAC Rubber Bellow
DN20 to DN250
HVAC RUBBER BELLOWS
Available in a wide range of sizes, flange and restraint options
Designed for lower temperature applications in the HVAC market, these expansion joints offer good value, quick delivery from stock and are available as both flanged and union ended.
Elaflex Rubber Bellows
DN25 to DN1000
ELAFLEX RUBBER EXPANSION BELLOWS
Renowned for their high quality and durability
Elaflex rubber expansion joints have over 8000 standard configuration options which includes a range of high quality rubber formulations to suit a vast range of applications. Core range in stock at FlexEJ.
Safetech Manufactured Bellows
DN600 to DN3000
SAFETECH MANUFACTURED BELLOWS
Fully engineered large diameter rubber expansion bellows
FlexEJ’s sister company, Safetech, designs and manufactures rubber expansion joints in Spain. We can offer multiple arch, reducing and rectangular bellows in all diameters and to over DN3600
Rubber Expansion Bellows Finders and Calculators
We have a couple of easy to use tools and calculators to help you find the best rubber expansion bellows from our next-day delivery stock items. Our Thermal Expansion Calculator for Piping helps you estimate the increase in length of a pipe run with temperature.
Our Advanced Bellows Finder is a quick way to navigate our stock range of bellows, both metal and rubber. With just a few choices you can arrive at the appropriate selection – criteria include pipe size, type, media compatibility, installation length, pressure rating, pipe connection type, conformance and movement axial, lateral and angular. All the products are in the online store with 24hr shipping as standard. If you’re not sure what flange you need our handy Flange Finder should also be useful.Stock Rubber Expansion Joint Finder
Do search for rubber bellows by pipe size, intended media and/or connection hardware to see FlexEJ’s stock bellows options below but don’t hesitate to call us on 01384 881188 or email us for more bespoke or OEM options or if you need any advice at all.
Can't see what you want? Need help?
Call us. Or use Live Chat.
For instant advice. We can custom-design and engineer almost any expansion joint you need for delivery in the UK or worldwide. Call our expert team on +44 (0) 1384 881188 Or email us sales@flexej.co.uk
Frequently Asked Questions
A. Yes. FlexEJ holds a large stock of the most popular sizes and types of Elaflex rubber bellows as well as our HVAC value bellows range. We also hold stock of the most popular metal bellows for HVAC. Many of these items are available on 24hr delivery from our online web shop. We can also manufacture to order. For sales assistance please contact us or use our Live Chat facility.
A. Our Flange Finder contains details for many common flanges. Typically, to be able to make the identification you need to know the bore size or outside diameter and number of bolts. For technical assistance contact us or use our Live Chat facility.
A. Please refer to our guidelines for installation, anchoring & guides. They are available in the Downloads section of this website: Elaflex Rubber Bellows Installation Instructions and FlexEJ Metal Bellows Installation Instructions. For technical assistance please contact us or use our Live Chat facility.
A. FlexEJ Value HVAC and Elaflex rubber bellows are stocked in a number of standard lengths from 105mm to 300mm, a summary of lengths, diameters and types can be found on each product page. We also offer fully engineered rubber bellows which are available in custom lengths to suit the application. You can use our bellows finder to find the most suitable product. For technical assistance please contact us or use our Live Chat facility.
A. Yes, if you have the details we can normally offer an equivalent, our FAQ here gives the information we will need for a full selection. For technical assistance please contact us or use the Live Chat link on this page.
A. To identify an existing expansion joint we need to know: nominal bore, overall length and flange type plus service, temperature, pressure and required movement if known. Try our Flange Finder to help identify the flange and you can send us a picture of the existing part using the Contact us form. For technical assistance please contact us or use the LIVE CHAT link on this page.
A. Yes, our Elaflex ERV-R and ERP rubber bellows have WRAS, DVGW and ACS approval for drinking water, see our Elaflex pages for more information. The Safetech manufactured to order rubber bellows can be supplied with WRAS approved EPDM linings. Our MRCA copper ended metal expansion joints also have WRAS approval. For technical assistance please contact us or use the LIVE CHAT link on this page.