SEIRIS

Fabric expansion joints (non-metallic expansion joints):

• Compensate large movement s in a short length

• Absorb simultaneous movements in more than one plane

• Very low forces required to move the expansion joint

• Noise and vibrations resistance

• Corrosion resistance materials

• Easy installation and maintenance

• Very low cost of replacement

• Design freedom

• Thermal breaks

Main Advantages:

• Compensate large movements (Axial, Lateral, Angular, Torsion)

• No limits in dimensions

• Low cost of raw materials

•  Low cost of Installation and Maintenance

• Light and Handy (reduced load for the ducts and safe for the staff)
  Corrosion resistance

Single Layer / Multiple Layer Expansion Joints

Belt Type / Flanged Type

Standards:

• Fabric Expansion Joints are designed, manufactured, and tested according to Internationally Recognized Codes and Standards:

• E.S.A (European Sealing Association)

• F.S.A (Fluid Sealing Association)

• RAL

We manufacture various types of:

• Circular expansion joints: axial, lateral, with hinge, Pressure balanced.
• Rectangular expansion joints: V and U shape
• Single convolution

Pumped fluid: all kind of (acid or strong bases very aggressive when we go under dew point) : in order to adapt our products to those various conditions, we use the following steels:

304 -304L - 316 - 316L -321-309-310-253 MA- 904L-317L, also all types of INCONEL and HASTELLOY

Our metallic expansion joints are studied, manufactured, and tested further to internationals standards: EJMA, ASME and AD Merkblatter.

Main Advantages

High pressure resistant
Flexibility
Low spring rates

Metal Expansion Joints are designed, manufactured, and tested according to Internationally Recognized Codes and Standards:

 E.J.M.A. (Expansion Joints Manufacturers Association, Inc.)

 ASME

 AD Merkblatter, etc

We manufacture all types of:

• Circular expansion joints
• Single convolution, double or triple convolutions, with tie rods, conical, balanced pressure
• And rectangular expansion joints: Single convolution or double convolutions

Pumped fluid: all kind of (acid or strong bases very aggressive when going under dew point) : in order to adapt our products to those various conditions, we use the following rubbers :
Rubber, Neoprene, EPDM, Silicon, Butyl, Chlorobutyl, NITRILE, SBR, HYPALON AND VITON

For flanges we use following steels: S 275JR, S355J2G3, AISI 304, 316, 316L.

Rubber expansion joints are studied, manufactured, and tested following international standards: FSA and ASTM.

Design Criteria

Temperature resistance
Resistance to corrosion
Forming capacity
Mechanical characteristics
Flexibility

Main Advantages

  Medium to high pressure resistance
  Flexibility
  Low spring rates
  Low maintenance
 Large cycle life

Standards:

Rubber Expansion Joints are designed, manufactured and tested according to Internationally Recognized Codes and Standards:
 F.S.A (Fluid Sealing Association)
 ASTM