30-FST_gaskets_for_dry_lining_box

Intumescent Gaskets

Adhesive pads and linings for use with a wide range of electrical boxes, offering fire and/or acoustic protection. (PRODUCT 30)

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  • Description
  • APPLICATION INSTRUCTIONS
  • DOWNLOADS
  • ORDER REFERENCES

Product Description

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An intumescent gasket fitting into BESA boxes, universal conduit boxes and plug or switch boxes, designed to comply with British Standards and IEE Regulations. Where socket outlets or switches are back to back in fire walls with cable or conduit passing tthrough walls, gaskets must be fitted inside these boxes to stop the passage of fire, and ALL boxes in plasterboard partitions MUST HAVE GASKETS FITTED, whether plastic or metal boxes. Where steel conduits pass through firewalls or floors, it is essential to terminate each side of the wall or floor slab with a BESA box or universal conduit box. Envirograf® intumescent gaskets fit into the back of the box, stopping the passage of fire and smoke from one compartment to the other.

 

ADVANTAGES

  • Solutions for both plastic and metal boxes, providing up to 4 hours protection- Compatible with single or double socket or switch boxes, BESA boxes, universal conduit boxes and ceiling roses
  • Complies with IEE Wiring Regulations, bringing standard boxes in line with Document B

 

FIRE TEST PERFORMANCE

Gaskets tested to BS476 Parts 20 & 22, achieving up to 4 hours fire protection in metal boxes.

Gaskets tested to EN1365-2 (1999), NEN6069 (2005), and EN1364-1 (1999), achieving up to 84 minutes protection in plastic boxes.

Acoustic fire and sound trap linings tested to BS476 Part 22 (1987), achieving 4 hours protection in solid walls and 71 minutes in cavity walls.

Acoustic criteria tested to BS476, Parts 20/22, EN 1364-1 (1999) & EN 1365-2 (1999).

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APPLICATION INSTRUCTIONS

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Intumescent gaskets are essential in metal or plastic boxes where cables pass back through a wall. Gaskets must be fitted to all dry lining boxes in partition walls. Without these gaskets fire can spread into the partition within 4-5 minutes. Where cables run through back to back boxes in brick or block walls, flames can pass through within 6 minutes, resulting in a wall or partition only 6 minutes of fire integrity.  Gaskets for use inside metal or plastic boxes are made to the size of the box and come with self-adhesive fixing on the back. Once the backing paper has been peeled off the fixing strip, the gasket can be adhered to the inside of the box. Holes can be cut into the gasket with a sharp knife to receive cables, or the gasket can be cut to fit the back of the box if cables are already fitted. Dry lining boxes in walls have two pads per box, made to size and adhered top and bottom. Plasterboard ceiling rose boxes can be protected by means of an intumescent cover which folds up and is passed through the hole in the ceiling. A hole is then cut in the cover to receive the cables, which are then pulled through the cover, box and ceiling before connecting the ceiling rose.  Ceiling rose gaskets to fit over the ceiling rose or hook plate should be fitted where more than two cables pass through the ceiling. A hole is made in the gasket through which the cables are passed. The backing paper of the self adhesive fixing strip is then peeled off and the gasket is adhered to the ceiling. The pendant or light fitting can then be fitted.

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DOWNLOADS

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Please use the links below to download relevant information as PDF documents:

 

Technical Information

TD030-03-2013

TD030 Standard-11-2013

TD030 Rubber-11-2013

 

Application Instructions

AP030-03-2013

 

COSHH Data

HS030 Standard-11-2013

HS030 Rubber-11-2013

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ORDER REFERENCES

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REF DIMENSIONS                               DEPTH                                                                                                
ABG33/2 075mm x 075mm                       050mm
ABG44/2 100mm x 100mm                       050mm
ABG44/4 100mm x 100mm                       100mm
ABG64/2 150mm x 100mm                       050mm
ABG66/2 150mm x 150mm                       050mm
ABG66/4 150mm x 150mm                       100mm
ABG99/2 225mm x 225mm                       050mm
ABG99/4 225mm x 225mm                       100mm
ABG12/12/2 300mm x 300mm                       050mm
ABG12/12/4 300mm x 300mm                       100mm

 

GASKETS FOR STANDARD METAL BOXES 

REF DESCRIPTION                                                                                                                                          
BEG Standard BESA Boxes
DPG Gasket for Double Metal Box
SPG Gasket for Single Metal Box
CRG Gasket for Ceiling Rose
ICRG Internal Gasket for Ceiling Rose

 

ACOUSTIC & FIRE PROTECTION FOR STANDARD METAL BOXES 

REF DESCRIPTION                                                                                                                                             
SPG/APS/26 For Single Metal Box 26mm deep
SPG/APS/37 For Single Metal Box 37mm deep
SPG/APS/47 For Single Metal Box 47mm deep
DPG/APD/26 For Double Metal Box 26mm deep
DPG/APD/37 For Double Metal Box 37mm deep
DPG/APD/47 For Double Metal Box 47mm deep
CBG/APC For Cooker Box

 

GASKETS FOR DRY LINING BOXES 

REF DESCRIPTION                                                                                                                                      
SSB Gasket set for Single Shallow Box                           2 gaskets per set
DSB Gasket set for Double Shallow Box                         2 gaskets per set
SDB Gasket set for Single Deep Box                                2 gaskets per set
DDB Gasket set for Double Deep Box                              2 gaskets per set
TDB Gasket set for Twinned Single Deep Box               4 gaskets per set
3DB Gasket set for Triple Deep Box                                 4 gaskets per set
MTC Square intumescent cover for Marshall-Tufflex or similar dry lining box
MTC/A Acoustic & intumescent cover for Marshall-Tufflex or similar dry lining box

 

SHALLOW & DEEP DRY LINING BOXES (35mm or 44mm DEEP) COMPLETE WITH INTUMESCENT GASKET(S) 

REF DESCRIPTION                                                                                                                                             
GBOX/R Circular ceiling rose box 32mm deep with intumescent gasket
GBOX/S Single shallow box with intumescent gasket
GBOX/D Double shallow box with intumescent gasket
GBOX/T Twin shallow box with intumescent gasket
GBOX/SD Single deep box with intumescent gasket
GBOX/DD Double deep box with intumescent gasket

 

FIRE AND SOUND TRAP FOR ELECTRICAL BOXES

The Envirograf® Product 30 range has been extended with a range of Fire and Sound Traps (FST acoustic and fire protection sleeves for electrical boxes). These have integrated intumescent material for use in timber-framed houses, etc. The FST products are easy to install and they will fit all cavity depths, for single/double, shallow/deep switch/socket boxes.

 

EXTERNAL

REF DESCRIPTION                                                                                                                                              
 FST/EXT/S/S&D Fire & Sound Trap External to fit Single Shallow & Deep Boxes*
FST/EXT/D/S&D Fire & Sound Trap External to fit Double Shallow & Deep Boxes*

* The two products above are supplied with fixing pins. No pins are necessary for the internal products shown below.

 

INTERNAL

REF DESCRIPTION    
FST/INT/S/S Fire & Sound Trap Internal to fit Single Shallow Boxes
FST/INT/D/S Fire & Sound Trap Internal to fit Double Shallow Boxes
FST/INT/S/D Fire & Sound Trap Internal to fit Single Deep Boxes
FST/INT/D/D Fire & Sound Trap Internal to fit Double Deep Boxes

 

SEE ALSO PRODUCT 110 FIROBLOK INTUMESCENT CONDUIT SLEEVES

 

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