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sealing

Induction sealing is the process of bonding thermoplastic materials by induction heating. This involves controlled heating an electrically conducting object (usually aluminum foil) by electromagnetic induction, through heat generated in the object by eddy currents.
Induction sealing is used in many types of manufacturing. In packaging it is used for package fabrication such as forming tubes from flexible materials, attaching plastic closures to package forms, etc. Probably the most common use of induction sealing is cap sealing, a non-contact method of heating an inner seal
to hermetically seal the top of plastic and glass containers. This sealing process takes place after the container has been filled and capped.

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  1. M

    Sealing around flues

    What's the classification for sealing around flues (AR, ID, NCS) Had a discussion, with landlord - if it's sealed outside and not inside, what would you say it is? And if it's not sealed at all only using rubber surround ? Thanks
  2. H

    Thread sealing

    What do the many do? I've heard people just use PTFE, some use Hawkwhite on its own, some use Hawkwhite with PTFE or hemp and some use V2 with PTFE. On another matter, V2 is useless on its own, so why bother using it?
  3. M

    Removing and/or sealing an old back boiler flue

    Hello, we've just had a back boiler removed, and a new combi installed elsewhere. The old boiler was in the kitchen fireplace. We now have a potential cupboard in the kitchen, spoiled by the presence of a 12 inch long, 6 inch diameter aluminium pipe protruding down from the 'roof' of the fire...
    • Martnal
    • Thread
    • about back boiler boiler flue martin oil old removing sealing should
    • Replies: 12
    • Forum: Plumbing Jobs | The Job-board
  4. M

    Shower enclosure sealent sealing issue

    Ok, I have a shower cubicle that needs to be re-siliconed as its gone moldy. The problem is, one of the side panels is about half an inch from a tiled wall, whicj half of that wall is a window. So am guessing this is why they put the side panel there. The problem being, i cannot get the silicone...
  5. P

    Sealing and setting a BSPP joint

    I have a 1/2 BSPP male valve which I need to install at a particular angle in a BSPP female elbow. It is not possible to tighten the fittings against a washer and achieve the desired installation angle. I need advice on the best setting thread sealant to use. My engineering chum said araldite...
  6. J

    Sealing boiler flue through wall 3 storey high flat

    Anyone know of a combi boiler with a flue that can be fitted/sealed through wall from inside only, ie 3 storey high flat with another flat Above so no access through roof.
  7. D

    sealing baths

    any good tips on sealing a bath to a partition wall
  8. B

    sealing up annular space

    Did a llgs this morning and found that the annular space above a baxi bermuda wasn't sealed at all, so I ar'd it. Does a metal sealing plate need to be made up or can mineral wool just be pushed up and around the flue liner to seal it ?
  9. C

    Soil vent pipe inside flat

    I have just moved in a rented flat (Housing Association) , ground floor in a two storey listed building. The small toilet has no window or external fan, but there is a Heat Recovery Ventilation System and a vent in the ceiling. Due to smell in the toilet, a surveyors visited the flat and...
  10. M

    Acrylic bath needs sides of waste hole sealing?

    Hi I am new to this forum, I have been a fully qualified plumber for 10 years and I have years of experience in assessing insurance claims and investigating leaks/causes of leaks on behalf of insurers but I have never come across a leak from water travelling through the side of a waste hole in...
  11. S

    U-duct sealing after decomission of appliance

    Hi folks, Can anyone help. I've been asked to decomission and remove a warm air heater in an ex council flat. Problem is, the flue is connected to a u duct and having not done any work on these, I thought i'd better check on the "correct" proceedure for resealing the duct post removal of the old...
  12. R

    Silver foil tape suitable for sealing drilled FGA test point?

    Hi all, Just come across a boiler with no FGA test point, so looks like in going to have to drill the flue 12 inches above the boiler to get a reading. Was just wondering if silver foil tape can be used to then seal the hole, im trying to find something in the regs about using foil tape...
  13. B

    bead thickness and o ring instead of grommet?

    Just resealed shower concealing plate with silicone. Q1: I caulked around, used finger to shape silicone, then wiped over with fairy. There is a very fine layer of silicone there. Do I need a thick bead to make things watertight? Old Sealing grommet has had it. Q2: Sealing grommet...
  14. B

    sealing pipe & sleeve

    I was in a road today where all the houses in the street had the semi-buried type meter boxes with the brown plastic lids. the supply pipes leave the side of the meter boxes and go into the houses through their external walls about 6 inches away from the meter boxes. The pipes are sleeved but...
  15. W

    Sealing a dog leg

    I need to fit a wall mounted bath mixer tap. It replaces an existing similar tap. To accommodate the spacing between the pipe centres, the existing taps were mounted using dog leg reducers. The new tap was also supplied with a pair of the same, see attached picture. I assume that these dog legs...
  16. M

    Sealing up gas coming into house

    Can this opening be sealed from the inside, so stopping the draught coming into the hallway? Or does it need this airflow. I understand it needs to be vented from the outside, so definitely do not seal this side. The pipe is sleeved and is bringing in a big draught into the hallway. ps...
    • marsaday
    • Thread
    • central central heating coming gas heating house inside pipe seal sealed sealing wall
    • Replies: 3
    • Forum: Plumbing Jobs | The Job-board
  17. E

    sealing around flue and PRV pipe

    whats the best way to seal a flue and prv pipe going through a brick wall? cement of expanding foam? or is there another better way? Do you have to sleeve the prv pipe?
    • efficient
    • Thread
    • around boiler flue gas gas safe inside ncs pipe prv rubber safe seal sealed sealing supply wall
    • Replies: 9
    • Forum: Plumbing Jobs | The Job-board
  18. P

    Sealing Concealed system flush pipe

    I have recently installed a jolly concealed cistern. The flush pipe which comes out of the cistern is connected via a screw onto a thread with a plastic washer between. I have tried everything I can to prevent small amounts of water leaking from the connection??? is there any advise an...
    • ParrDi Gras
    • Thread
    • cistern concealed concealed cistern flush leaking pipe screw seal sealing system washer water
    • Replies: 3
    • Forum: Plumbing Jobs | The Job-board
  19. W

    Internal leak sealing liquid

    For adding to central heating system and sealing leaks in inaccessible places. Anyone ever tried this? Seen it advertised. Don't need to use any or anyting, just wondered if it works. And actually, how it works...
    • WaterTight
    • Thread
    • air boiler central central heating system concrete concrete floor drip expansion fitting glue install internal leak leaking liquid pressure pressurised radiator seal sealed sealing sludge system valves vessel
    • Replies: 15
    • Forum: Plumbing Jobs | The Job-board
  20. P

    sealing plug after analyser test

    When you have finished a flue analyser test using one of the inspection plug holes on the flue above the boiler on new HE boilers and replace the plug ,do you or should you check it is sealed correctly ? If so how ? Only mention as did one the other day and jobs worth customer said about it,I...
    • Puddle
    • Thread
    • after analyser bits boiler boilers gas jobs leak paperwork pipe plug seal sealed sealing tee test van work
    • Replies: 6
    • Forum: Plumbing Jobs | The Job-board
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