Alternative to Polymarine 2903

oGaryo

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Hi, not so much about saving pennies but more in terms of sourcing an alternative PVC primer and cleaner locally (more quickly)... can something like acetone or MEK be used as a replacement primer/cleaner for preparing a PVC dingy to glue on the davit pads? thanks Gary
 

VicS

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It is very largely MEK but it contains a little tetrahydrofuran which is a solvent for PVC.

For something non critical I'd not hesitate to use plain MEK, which will, I think, soften it a bit anyway.
Acetone should have no effect.

For something critical I think the correct cleaner/primer might be advisable.

You should be able to get it directly from Polymarine or any inflatable/RIB specialist.
Decent Chandlers should stock it.

See the instructions for gluing PVC on the Polymarine website http://www.polymarine.com/?page_id=23
 

oGaryo

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It is very largely MEK but it contains a little tetrahydrofuran which is a solvent for PVC.

For something non critical I'd not hesitate to use plain MEK, which will, I think, soften it a bit anyway.
Acetone should have no effect.

For something critical I think the correct cleaner/primer might be advisable.

You should be able to get it directly from Polymarine or any inflatable/RIB specialist.
Decent Chandlers should stock it.

See the instructions for gluing PVC on the Polymarine website http://www.polymarine.com/?page_id=23

Good advice thanks.. down to Basingstoke in the morning on business so will pop in to a Chandlers after the meeting somewhere down south to pick up the Polymarine gear. thanks again
 

GrahamM376

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Hi, not so much about saving pennies but more in terms of sourcing an alternative PVC primer and cleaner locally (more quickly)... can something like acetone or MEK be used as a replacement primer/cleaner for preparing a PVC dingy to glue on the davit pads? thanks Gary

Acetone cleans PVC OK, I've used it for dinghy patches several times. The adhesive is also the primer, you need to let 2 coats go dry before applying the 3rd (final) coat. Don't use the davit pads for a few days though.
 

VicS

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Acetone cleans PVC OK, I've used it for dinghy patches several times. The adhesive is also the primer, you need to let 2 coats go dry before applying the 3rd (final) coat. Don't use the davit pads for a few days though.

Thats not how Polymarines instructions read, leastways not how I understand them

I'd advise the OP to read and follow Polymarines instructions
 

GrahamM376

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Thats not how Polymarines instructions read, leastways not how I understand them

I'd advise the OP to read and follow Polymarines instructions

From memory, those were the instructions I got from Polymarine when I bought the davit patches, along with the 2 part adhesive. I will check the tin instructions when back on board tomorrow.
 
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