No.	Item	Material	Notes
1	Wrap component	Q235，SS304，SS316，etc.	Oil oaint anti-corrosion
2	Backboard flange	Q235，SS304，SS316，etc.	Oil oaint anti-corrosion
3	Rubber	NER，NR，EPDM，CR，IIR
4	Wrap component	Q235，SS304，SS316，etc.	Oil oaint anti-corrosion

Technical parameter	FDZ type duct rubber compensator
Compensation length	± 90mm
Working pressure	≤4500pa
Temperature range	~40℃ – 150℃
Installation length	300 – 450mm
Tensile length change rate	≤15%
Tensile strength	≥12Mpa
Elongation at break	≥300%
Permanent set at break	≤25%
Hardness	58 ± 30
Air aghing	70℃ × 72h
Change in elongation at break	≥20%

FDZ Straight Pipe Air Duct Rubber Compensator is an independent research product of our company, its corrugation is wider and higher than similar products, which makes it has a larger compression, extension, angular, lateral and deflection displacement.1.Handling Clean or Dirty Air Streams, Gas Streams, or Flue Gas Streams 2.Elastomers, Fluoroelastomers, Viton, Teflon, Silicone, Composite, Multi-Layer 3.Steel Assembled or Knocked Down, Flow Liners, Clamping Bars, Mounting Frames 4.Insulation Pillows, Refractory Designs, Wire Mesh Encasements, Ceramic and Fiberglass