Gasket

Slip-on Flanges
   Roll-formed G. I. section with embedded sealant.
   Available in different cross-sections to provide a range of rigidity and strength characteristics.
   Available for 26-gauge to 22-gauge ductwork, in the form of
    
   Rolamate E Flange
   Rolamate H Flange
   Rolamate J Flange
 
 
   Meets SMACNA rigidity class for transverse joints.
   Available in cut-to-size length at job site.
   Rolamate profile offers good aesthetic look.
 
 
 Corners
   To be inserted into the hollow web of the slip-on flange.
   Available in 3 different types
    
   Rolamate E Conner for Rolamate E Flange
   Rolamate H Conner for Rolamate H Flange
   Rolamate J Conner for Rolamate J Flange
 
 
   4 corner pieces are required for each rectangular frame, 8 corner pieces per joint.
   Leg Square hole provided for ease in tightening with ratchet spanner.
   Rolamate E/H/J stamped on corner for easy identification.
   Legs of corner are embossed in accordance with the recess in the flange for ease in fitting.
   Two round holes are provided for alignment while connecting two duct sections.
 
 
 Sealant
   To be applied as a thin bead at the interface of duct and ROLAMATE corner piece only.
 
 Cleats
   G. I. Metal Cleat 100 mm in length can be snap-fitted or slid over the mating flanges.
 
 Gasket
   Self adhesive, microcellular, cross-linked, Polyethylene foam type. (Alternatives : PVC or Neoprene)
 
 Bolts, Nuts and Washer
   Electro-galvanised, square-necked carriage bolts, with flanged nuts or nuts and washers.
   Each joint requires 4 sets.
   Two round holes are provided for alignment while connecting two duct sections.
 
The Rolamate is designed and manufactured in different sizes and thickness to meet even a class of 6 and rigidity classes E, H and J as specifies by SMACNA.
Each of these systems have been independently tested and certified by nationally recognized 3rd party testing for conformance with SMACNA/ DW-143 for leakage resistance and rigidity.
 
Features of Rolamate
 
 Design criteria
   Indigenous components only.
   Ultra-low air leakage in the system, to save on energy costs.
   A very high strength-to-weight ratio, to minimise the raw material costs.
   High productivity at job sites through ease assembly and installation.
    
   Slip-on Feature of the assembled flange.
   Easy fastening of flanges with duct sides (by punch-lock fastener, pop-rivets, self-tapping screws or spot-welding.)
   Requires only four corners bolts to be tightened.
 
 
 Key features of the components
   Flange Design:
    
   A double top rib to give a very high EI value to the flange (high strength - to - weight ratio).
   Recessed Grooves for:
    
   imparting greater strength to the flanges
   providing a seat for the self adhesive gaskets (useful in the assembly and installation of flanges)
 
 
   A special pocket for the built-in sealant which runs the length of the flange and which fully envelopes the duct side wall edge when fully seated.
   A non-toxic, permanently semi-soft sealant (to avoid hardening and shrinkage at later stages).
 
 
   Corner Design:
    
   Raised contour in the corner piece to match the recessed groove of the flange, for achieving low leakage.
   Square hole to match the square neck carriage bolt which can be tightened using one hand only ( useful at heights)
   Holes to facilitate alignment of the duct assembly.
   Strong, stiff corners to avoid bending during transportation and storage.
 
 
   Flange Selection Criteria:
    
   (Recommended Configurations as per SMACNA*1 - 1995)
   ROLAMATE Flanges are available in different sizes and identified by its Rigidity/Reinforcement "Class" as per SMACNA.
   The proper selection of the right flange depends on the independent parameters:
    
   Duct static pressure
   Duct size
   Spacing between joints and/or reinforcements at 1200 mm (4)