Expansion Joints

Flexible movement & vibration absorber

Rubber, PTFE and metal-bellows expansion joints that absorb thermal growth, misalignment and vibration in pipework and ducting.

Absorbs axial, lateral and angular pipe movement
Damps pump and machinery vibration and noise
Rubber, PTFE or metal-bellows construction per duty
Protects pumps, flanges and supports from fatigue
Control units available for high-thrust lines

Temperature: -50°C to +250°C (rubber/PTFE) / +550°C (metal)
Pressure: Up to 16 bar (rubber) · higher for metal bellows
pH range: 1 – 13 (PTFE-lined)

Flanged rubber expansion joint with a single arch and control tie rods — Other ProductsREF · expansion-joint

Technical DatasheetSPEC

The numbers, on the record

Every figure below is the specification we hold ourselves to — material, service envelope, media compatibility and conformance. Download it as a standalone document for your dossier.

SealGuard

Technical Datasheet

Doc No.: DS-EXPANSION-JOINT
Revision: Rev. A
Issue: 2026-Q3
Class: Other Products

Expansion Joints

Flexible movement & vibration absorber

01

Material & Construction

Elastomer (EPDM / NBR), PTFE-lined or 316 stainless metal-bellows construction

02

Service Envelope

Temperature range	-50°C to +250°C (rubber/PTFE) / +550°C (metal)
Pressure rating	Up to 16 bar (rubber) · higher for metal bellows
pH range	1 – 13 (PTFE-lined)

03

Media Compatibility

WaterMineral oilsProcess chemicalsSteamFlue gases

04

Dimensions & Sizing

DN25–DN600 · flanged or threaded · single / multi-arch · with control rods

05

Standards & Conformance

EN 13787
EJMA (metal bellows)
BS 6129

06

Certifications

ISO 9001
WRAS (water grade)
DNV / marine type-approved

07

Additional Specifications

Movement	Axial · lateral · angular
End connections	Flanged / threaded / weld-end

Construction	Rubber · PTFE-lined · metal bellows
Control units	Tie rods for high-thrust lines

Specify & QuoteORDER

Build your line item

Choose the material grade and size that match your duty, set a quantity, and add a fully-specified line to your quote. No prices, no obligation — our engineers confirm specification and lead time on every enquiry.

01

Material grades

EPDM rubber bellows (water / general)
NBR rubber bellows (oils)
PTFE-lined bellows (chemical)
316 stainless metal bellows (high temp / pressure)
Fabric / elastomer composite (ducting)

02

Sizes & configurations

DN25–DN600 (1"–24")
Single or multi-arch (rubber)
Flanged or threaded ends
With control / tie rods
PN10 / PN16 / Class 150
Custom lengths to drawing

In ServiceUSE

Where it holds the line

Rigid pipework can't accommodate the thermal growth, pump vibration and misalignment that real plants impose — so something flexible has to. SealGuard expansion joints take up that movement: rubber bellows for vibration and general service, PTFE for aggressive chemicals, and stainless metal bellows for high temperature and pressure. By absorbing axial, lateral and angular movement, they protect pumps, flanges and supports from fatigue, quieten the system and extend the life of the whole connected run.

Typical applications

01Pump suction and discharge connections
02Thermal-growth pipework and ducting
03Vibration isolation on rotating equipment
04Chemical-transfer lines (PTFE)
05High-temperature exhaust and flue systems (metal)

Industries served

The rest of other products

View all Other Products

PTFE Thread Seal Tape

Inert tape for threaded joints

Density-graded PTFE thread-seal tape that seals tapered pipe threads against gas, water and chemicals with a clean, inert wrap.

View product

Metallic Gaskets

Ring-type joints for extreme flanges

Ring-type-joint (RTJ) metallic gaskets in soft iron and stainless that seal the highest-pressure, highest-temperature flange duties.

View product

Jointing Sheets

General-purpose fabrication jointing

Economical general-purpose jointing sheet for cutting everyday gaskets for water, air and low-pressure service on the bench.

View product

Custom Die-Cut Seals

Bespoke seals to your drawing

Custom gaskets, washers and seals die-cut or waterjet-machined from any sheet material to your exact drawing or sample.

View product

Let’s specify it

Specify this seal for your service.

Send us the media, temperature, pressure and motion for your duty and our engineers will confirm the right material grade, size and standard for your application.

Request a QuoteFind Your Seal