Rubber Flexible Joint

This Rubber Flexible Joint (also called rubber soft joint) is a flexible connector for piping systems. It consists of a rubber elastomer (middle main body) and metal flanges (end connection structures), serving as a flexible component to connect pipes in piping systems. It achieves displacement compensation and vibration buffering of pipes through the elastic deformation of rubber.
Material :Mid Steel & Rubber
Normal Diameter : DN50 to DN600
Connection :Flange
Working Pressure :1.6 Mpa
Type :Rubber Joint
Application :Industrial pipeline,Firefighting system etc.
MOQ :50 Pieces
Delivery Time :15~30 Days

Product category:

Fire Protection Valve

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Product Details

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Product Formation

This Rubber Flexible Joint (also called rubber soft joint or rubber expansion joint) is a core flexible connector for piping systems, integrated by weather-resistant rubber elastomer and high-precision metal flanges. It is specifically designed to resolve displacement, vibration and installation deviation issues during pipe operation: it enables flexible docking between pipes, adapts to pipe deformation compensation under various working conditions, and enhances the sealing reliability of the system. It is widely applied in fluid transmission pipelines across multiple industries.

KEY WORDS：Rubber flexible joint、Rubber soft joint、Rubber expansion joint、Flanged rubber flexible connector、Rubber flexible joint for water supply、NBR rubber flexible joint、Industrial rubber pipe connector、Vibration damping rubber joint、Pipe flexible expansion joint、Stainless steel flange rubber joint

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Product Features

Vibration & Noise Attenuation：Absorbs vibrations from pumps, compressors and other supporting equipment, reducing operational noise by 20%-30% to meet industrial/environmental noise control standards.
Multi-Directional Displacement Compensation:Compensates axial (5-15mm), lateral (3-10mm) and angular (1°-3°) displacements caused by thermal expansion/contraction or installation errors, avoiding stress damage to pipes and equipment.
Reliable Sealing & Leak Prevention:The high-elasticity rubber elastomer ensures tight sealing; combined with flange connection, it achieves zero leakage for media such as water, oil and weak corrosive fluids.
Wide Adaptability & Easy Installation:Compatible with standard PN10/PN16 pipe flanges, supporting quick installation and disassembly; customizable rubber materials (natural rubber, NBR, FKM) adapt to different medium types.

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Product Parameter

Parameter Item	Common Specifications
Nominal Diameter (DN)	DN50, DN80, DN100, DN150, DN200, DN300
Nominal Pressure (PN)	1.0MPa, 1.6MPa, 2.5MPa
Nominal Length	DN50: 105mm; DN100: 140mm; DN200: 180mm; DN300: 220mm
Rubber Material	Natural Rubber (water); NBR (oil); FKM (corrosive media)
Flange Material	Carbon Steel Q235; Stainless Steel 304
Applicable Temperature	-20℃~80℃ (NR); -40℃~120℃ (NBR/FKM)
Applicable Medium	Water, oil, weak acid, weak alkali

Main Application Scenarios

Water Supply and Drainage Systems: Flexible connection for building and municipal water supply/drainage pipes, adapting to pipe displacement compensation needs.
HVAC Systems: Vibration-damping connection for air conditioning and heating pipes, reducing system operation noise.
Industrial Pipes: Medium transmission pipes in industries such as chemical engineering and metallurgy, compensating displacement and buffering equipment vibration.
Fire Protection Systems: Flexible connection for fire protection pipes, enhancing the impact resistance of the system.

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FAQ

Q: Can you accept sample order?

A: Yes, we accept samples with little and reasonable charge.But need customer pay sample fees and transport fees first.

Q: What is your payment terms?
A: Payment supports T/T, L/C, etc.

Q: How can l get my order?
A: We will send you the goods by UPS,DHL,FedEx,Oversea Shipment or other forwarder, all with tracking number.

Q: Why choose us?
A; With over 15 years of experience in the fire protection industry, our company has professional technical personnel and many well-known partners in the domestic market. We offer favorable prices and guarantee quality, having passed multiple certifications!

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We serve customers for over 15 years — so we’ve got the knowledge and industry experience to help you get it right.Professional technical support, intimate service experience We have a professional technical support team, at any time to provide you with product consultation, installation guidance and after-sales service.

At Sheng Feng Fire, our professionals are dedicated to helping you select the most suitable products based on your specific needs.

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