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Thread: Fitting pleated cartridge
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6th June 2017, 10:43 PM #1Senior Member
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Fitting pleated cartridge
Picked up some pleated filter cartridges today for the dusty, having a bit of trouble getting them on. It seems that these 500mm dia ones are made for FM300 units which are 490, and mine is 504. It's close, but won't quite go on. Any advice on how to stretch the rubber collar? I thought about heat, but then remembered that heat will shrink a stretched rubber band.
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6th June 2017, 10:52 PM #2GOLD MEMBER
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I've been told that KY Jelly is a good lubricant for rubber. I've not tried it, but someone suggested it for replacing the tyres on bandsaws, so it must work.
KrynTo grow old is mandatory, growing up is optional.
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6th June 2017, 11:22 PM #3Senior Member
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KY is water based, so it would be safe enough. So would soapy water using dishwashing detergent. But if I stretch it over I need it to grip, I suspect a lubricant would just make it harder to fit as it could just as easily slip off again.
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6th June 2017, 11:39 PM #4Taking a break
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If you're careful with your application of heat I suspect you could make the rubber a bit more pliable without shrinking it. Another way might be with bike tyre levers; being fibre-reinforced-plastic, there should be little chance of damaging anything but you might want to get a few spares in case they snap.
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6th June 2017, 11:55 PM #5Woodworking mechanic
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When we fit "rubber" bushes or hangers, we use straight dish washing liquid. Leaves no residue and doesn't cause the "rubber" to deteriorate
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7th June 2017, 09:29 AM #6.
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One problem with over stretching rubber is it can then shrink in time and can then crack.
Before you overstretch it what about pop riveting and sealing a strip of sheet metal around the inside of the DC bag housing.
This should at least knock off a few mm of the distance needed for the rubber cola rot be stretched?
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7th June 2017, 11:40 AM #7Senior Member
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That will be what I'll do if I can't stretch it over. I was trying to avoid doing that because I figured it would introduce potential leakage points.
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7th June 2017, 01:51 PM #8.
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7th June 2017, 05:09 PM #9Senior Member
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With perseverance, a bunch of clamps, some lube, a few tyre levers and a not inconsiderable amount of language no child should ever hear, they're on. Thanks for all the suggestions, much appreciated.
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