Products

Adhesives and sealants for Filter Assembly

S-387E

 

S-387 E is a two part, cold curing epoxy sealant.  It is designed to seal air filters and has the particular feature that it  does not “wick” up the filter paper so reducing its efficiency. S–387 E has a low density and is flame retardant.  This is achieved by adding hollow microspheres to the part 1  (resin) and two retardants to the part 2 (hardener).

APPLICATION
S-387 E is used as an end-cap sealant in air filters for the aircraft industry.

INSTRUCTIONS
Reference should be made to the Material Safety Data Sheet. Thoroughly mix part 1 (resin) with part 2 (hardener) in the ratio of 8:3 for the minimum time required to obtain an even colour.  In the case of a dosed set, all part 1 of the set should be mixed with all part 2. Pour the required amount of mixture into the filter end-cap or mould, insert the filter element and put aside, undisturbed, to cure.  The cure time can be reduced by warming. Use all the mix within its work life.

S-2249E

 

S-2249 E is a two-part epoxy sealant and adhesive, curing at room temperature.  Its consistency is designed to allow it to be dispensed readily as a slump resistant bead.   The cured material has good heat and vibration resistance. S-2249 E may be used as a filter seam sealant to survive many pulses at 60° C.

In a field trial a “blind” filter (pores clogged to eliminate transmission) was exposed to 2.5 million air pulses at 90 psi, 60° C without detriment.   The pulse duration was 200 milliseconds at 2 second intervals.

INSTRUCTIONS
Ensure that the mesh is clean, dry and free from dust.  Mix S–2249 E in the ratio Part 1: Part 2 = 2:1 by weight or volume (the disparity in SG of the two components allows the cure ratio to fall within the ratio abuse range). Apply the bead of mixed adhesive to both sides of the mesh and insert into the filter.   Allow time for the adhesive to cure, this time may be shortened by heating to about 60o C.


S-2088E



 

S-2088 E may be used to seal filter end-caps especially where resistance to methanol and oils is required.

S-2088 E is a two part cold curing sealant.  Its particular feature is it resists boiling methanol and hot oil.

INSTRUCTIONS FOR USE

Refer to Material Safety Data Sheet before use.
Mix 2 parts of Part 1 with 1 part of Part 2 and pour into the end cap, insert the filter and allow to cure at either room or elevated temperature.

S-2197E


 

S-2197 E is a two part, cold curing epoxy sealant. S-2197 is very mobile and, when cured, resists exposure at 100o C. S-2197 E is used as an end-cap sealant for filters where the low viscosity enables it to fill small spaces in the pleats of the filter medium.

The temperature resistance of S-2197 E permits its use in aggressive environments.

INSTRUCTIONS FOR USE
Refer to Material Safety Data Sheet before use.
Ensure the components are clean, dry and free from dust or grease.
Mix 5 parts of Part 1 with 1 part of Part 2 and pour into the end cap by hand or machine. Insert the filter and allow to cure at either room or elevated temperature.

S-206E Toughened Epoxy

 



S-206 E is two part, cold curing epoxy adhesive in paste form. It is "rubber-toughened" and cures to a flexible film. It has the advantages of:-


* high impact resistance
* high peel strength
* a long pot-life at room temperature after mixing
* self-levelling if heat cured
* resistance to hot hydrocarbon and some phosphate oils


S-206 E will bond a variety of materials, e.g. mild steel, stainless steel, galvanised steel, zintec, aluminium and some rigid plastics. S-206 E is particularly useful in the manufacture of filter end-caps where its dual cure-cycle can be exploited either at room temperature to give slump resistance or flash cured (2.5 minutes at 180o C.) to give self-levelling.



INSTRUCTIONS FOR USE

Reference should be made to the Material Safety Data Sheet.  Ensure the surfaces to be bonded are clean, dry and free from grease and dust. Adhesion may be improved by abrasion or solvent wipe.  Mix equal quantities, by weight or volume, of the two parts and stir thoroughly until an even colour is obtained.  Apply to one surface and offer up the second surface, clamp or jig together under light pressure.  Put aside, undisturbed, to cure at room temperature, substantial cure being attained within 24 hours, or accelerate the cure with heat. E.g. exposure at 100o C. will result in a 15 to 20 minute cure time.