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Flammability Requirement for Gaskets and Seals - UL 61010-1


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flammability standard, gasket, iec 61010 - safety requirements for electrical equipment, seals
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  Post Number #1  
Old 30th September 2016, 01:49 PM
occounty

 
 
Total Posts: 26
Please Help! Flammability Requirement for Gaskets and Seals - UL 61010-1

Hello,

We are trying to get our upcoming new product certified to UL 61010-1. Currently we are stuck with the gasket for 8 inches by 15 inches in our product. Is there any specific requirement for the flammability of gaskets/seals? I was not able to find anything specific in 61010-1 standard.

Thanks in advance!

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  Post Number #2  
Old 4th October 2016, 11:16 AM
CharlieUK

 
 
Total Posts: 113
Re: Flammability Requirement for Gaskets and Seals - UL 61010-1

It depends on where the gasket is.

Easiest route to compliance is generally containment option in Figure 11, so if you meet clause 9.3.2 (b) then I don't think there should be much on an issue.

What flammability rating does the gasket have?
Is it fitted in any kind of recess, or just sat between two flat surfaces?
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  Post Number #3  
Old 4th October 2016, 05:43 PM
occounty

 
 
Total Posts: 26
Re: Flammability Requirement for Gaskets and Seals - UL 61010-1

Hello,

The gasket is located in the trace in the polymeric enclosure and the polymeric door both of which are ULV-0 rated. This part of enclosure houses three heaters raging from 10 W to 60 W.

Thanks for help.
  Post Number #4  
Old 14th October 2016, 06:49 PM
occounty

 
 
Total Posts: 26
Re: Flammability Requirement for Gaskets and Seals - UL 61010-1

The gasket is in recess.
9.3.2 requires that enclosure and flame barrier of non-metallic materials shall have a flammability of V-1 or better.

Now, in our case the enclosure is rated V-1, but the question is how about gasket? The gasket sits in the recess on the edge of the compartment which happens to be flame enclosure.

Thank you for your support.
  Post Number #5  
Old 16th October 2016, 11:07 AM
CharlieUK

 
 
Total Posts: 113
Re: Flammability Requirement for Gaskets and Seals - UL 61010-1

Does the enclosure meet fire enclosure design requirements if you ignore the gasket
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