15mm grommets?

Question

Can you get them - I can't find any.I have a couple if PIRs for security lights and they have 15mm holesin the back of them.I don't want to leave them open to elements where the cable enters -but I can't find correct size grommets.Any tips on how to seal cable entry?

Cicero · Accepted Answer

===============================These might be suitable:

Rob · Answer

Wine bottle cork. Works well for old centrall heating pipe holes as well

ARWadsworth · Answer

SiliconeAdam

Dave Plowman (News) · Answer

So you really need blind or blanking grommets? Maplin or Halfords.

Wallace · Answer

Sorry - are you saying that both Maplin and Halford sell 15mm I can'tsee them on-line?

Dave Plowman (News) · Answer

For Maplin check out QT95, QT98, RG78. Their website isn't much good thesedays. Never looked at Halfords one - but saw packs of assorted blankinggrommets in my local one the other day.

wallace · Answer

cheers - many thanks

wallace · Answer

Looks possible - many thanks

Aidan Karley · Answer

"These might be suitable:"Their description includes the seemingly contradictory statement that they are for a 15mm hole, and have an M12 thread on them. It's not contradictory - you need some clearance to pass the thread into (1.5mm in this case), and you need a lock nut on the inside of the box you're grometting into. If I recall my ExE wiring in the past, you can get junction boxes with walls thick enough to screw a gland into directly (without a locking nut), but these typically have tapered threads (NPT if I recall correctly, but I can't remember if that's to Lloyds list standards, US Coastguard, or Det Norske Veritas) and you still need some lock nut to secure your earthing tag with, so there's no great advantage. Unless you're replacing those horrible putty-filled sealant glands for US CG regs.

15mm grommets?

Join the Discussion

Didn't find your answer?