NBR/EPDM rubber expansion joint carbon steel stainless steel flange pipe connection
DN50-DN400
NBR/EPDM rubber expansion joint fitted with carbon steel or stainless steel flanges for pipe connection. It effectively absorbs axial, lateral and angular thermal displacement of pipelines, reduces mechanical vibration and noise transmission, and compensates for installation deviation. Suitable for water, oil and general‑medium piping systems, reliable for pressure‑resistant pipeline working conditions.
Delivery
EXW
minimum order
10 pieces
Supply Ability
100pieces / Day
Country of Origin
CHINA
Stock Time
7Day
Quantity:
US $19.90 - US $1999.00 / pieces
Product Overview
This rubber expansion joint is designed for pipeline connection, available with NBR or EPDM rubber body, matched with carbon steel or stainless steel flanges. It is widely used in industrial piping systems to absorb multi‑directional thermal displacement, damp vibration, isolate noise and compensate installation misalignment. It protects pipelines and equipment from stress damage caused by thermal expansion, contraction and mechanical shock, suitable for water, oil, weak acid‑base and other general‑medium working conditions.
Main Features
- Multi‑directional displacement compensation: Capable of absorbing axial, lateral and angular displacement of pipelines, solving pipe position deviation caused by temperature change or construction error.
- Excellent vibration & noise reduction performance: Rubber buffer structure effectively cuts off vibration transmission between pipes, lowers running noise of pump and valve equipment.
- Multiple rubber material options: NBR performs well for oil‑containing medium; EPDM owns great ageing‑resistance and hot‑water resistance for water‑system pipelines.
- Optional flange materials: Carbon steel flange for conventional cost‑effective projects; stainless steel flange for corrosion‑prone working environment.
- Easy installation: Flange‑type connection, convenient for assembly and disassembly, no complex welding operation required.
Application Scope
Widely applied in water supply & drainage systems, HVAC circulating pipelines, oil delivery pipelines, chemical general‑medium pipelines, pump‑valve outlet connections, power plant and factory industrial piping.
Technical Reference Data
| Item | Description |
|---|---|
| Rubber Body | NBR (for oil medium) / EPDM (for water & hot‑water) |
| Flange Material | Carbon Steel / Stainless Steel 304 /316L |
| Connection Type | Flange connection (ASME B16.5 / GB standard available) |
| Nominal Diameter | DN50‑DN400 or custom size |
| Pressure Rating | PN10 / PN16 / Class150 optional |
| Working Temperature | NBR:‑20℃~+120℃；EPDM:‑40℃~+130℃ |
| Compensation Function | Absorb axial, lateral, angular displacement; vibration damping, noise reduction |
Notes for Installation
- Do not twist the expansion joint during installation; avoid over‑stretching or excessive compression.
- Keep away from sharp objects to prevent rubber surface scratch.
- For heavy‑duty pipelines, add pipe support to avoid extra load acting on rubber joint.
