MEK is ALWAYS the cleaner of choice, no matter WHAT the clean up is.
Scott
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| Commercial Equivalent to MIL-A-5540B https://www.warbirdinformationexchange.org/phpBB3/viewtopic.php?f=26&t=42093 |
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| Author: | L2Driver [ Thu Aug 11, 2011 8:13 pm ] |
| Post subject: | Commercial Equivalent to MIL-A-5540B |
Is there a commercial equivalent for MIL-A-5540 (ADHESIVE, POLYCHLOROPRENE)? I've not had much luck finding anything. I need less than a pint. Alternatively a source for MIL-A-5540B? Thanks, Chris |
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| Author: | cco23i [ Thu Aug 11, 2011 8:27 pm ] |
| Post subject: | Re: Commercial Equivalent to MIL-A-5540B |
Have you tried here? http://www.glueit.com/index.php Scott |
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| Author: | L2Driver [ Fri Aug 12, 2011 5:56 am ] |
| Post subject: | Re: Commercial Equivalent to MIL-A-5540B |
Hi Scott, I've written to/contacted about half a dozen different adhesives companies. None (thus far)were able to point me to a consumer-level vendor or give me a name of a commercial equivalent. I'm looking to see if DAP Weldwood contact cement is a comparable product. It lists as "High solids polychloroprene, waterborne contact adhesive". Correct chemical although I have no idea if it's the same strength as the MIL adhesive. |
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| Author: | shrike [ Fri Aug 12, 2011 8:51 am ] |
| Post subject: | Re: Commercial Equivalent to MIL-A-5540B |
What are you needing to glue? There could be a commercial equivalent that may have higher performance, but never been submitted for MIL approval. Or the MILspec may have been superceded or withdrawn without replacement. Either avenue could lead to using a suitable adhesive by showing equivalence. (I've run into both - one where a spec had been withdrawn 30 years prior, and one where a specific oil called out had been discontinued by the sole manufacturer) |
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| Author: | L2Driver [ Fri Aug 12, 2011 9:52 am ] |
| Post subject: | Re: Commercial Equivalent to MIL-A-5540B |
I'm restoring my flight helmet and MIL-A-5540 is the specified adhesive for the edge roll and for securing the internal velcro to support the ear cups, etc. MIL-A-5540 evolved into MIL-A-5540B back in 1973 and has remained in continuous use ever since. My concern with a commercial subsitute is that it has the same properties -- i.e. flammability, heat tolerance, etc. I don't need my helmet falling apart in a fire or combusting when I need it the most! |
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| Author: | b29flteng [ Fri Aug 12, 2011 11:20 am ] |
| Post subject: | Re: Commercial Equivalent to MIL-A-5540B |
Try this. http://www.farnell.com/datasheets/311054.pdf |
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| Author: | L2Driver [ Fri Aug 12, 2011 4:18 pm ] |
| Post subject: | Re: Commercial Equivalent to MIL-A-5540B |
b29flteng: saw that site while looking at the adhesives. It's a two-part system like epoxy. This is a good example of my concerns. Despite the same name, the Farnell stuff is made for an entirely different application. The mil-spec stuff is like rubber cement but a little more liquid. Different base solvent than rubber cement but similar consistency. Basically you apply it with a brush. No mixing, etc. |
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| Author: | b29flteng [ Sat Aug 13, 2011 10:09 am ] |
| Post subject: | Re: Commercial Equivalent to MIL-A-5540B |
I got to work and looked this up on the qualified products list for Mil-A-5540b. I think the class 2 is what you want. CLASS 2 BLACK FA-1030 - PLUS ACCELERATOR NAVAIRDEVCEN ltr 4123 Ser 6062/9040 dtd 5 Aug 1986 CLIFTON ADHESIVE INCORPORATED 79833 CLASS 2 BLACK FA-1030 - PLUS ACCELERATOR CLIFTON ADHESIVE INCORPORATED 79833 CLASS 2 NEUTRAL FA-1030 - PLUS ACCELERATOR NAVAIRDEVCEN ltr 4123 Ser 6062/9040 dtd 5 Aug 1986 CLIFTON ADHESIVE INCORPORATED 79833 CLASS 2 NEUTRAL FA-1030 - PLUS ACCELERATOR CLIFTON ADHESIVE INCORPORATED 79833 CLASS 2 NEUTRAL FA-1065 - ONE PART CLIFTON ADHESIVE INCORPORATED 79833 CLASS 2 NEUTRAL FA-1065 - ONE PART NAVAIRDEVCEN ltr 4123 Ser 6062/9040 dtd 5 Aug 1986 CLIFTON ADHESIVE INCORPORATED 79833 |
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| Author: | L2Driver [ Sat Aug 13, 2011 12:18 pm ] |
| Post subject: | Re: Commercial Equivalent to MIL-A-5540B |
I was able to cross reference a descriptor in an old HGU-26 helmet manual against the MSDS for DAP Weldwood contact cement and the active ingredients and solvents are the same. MEK is the cleaner/remover of choice. DAP also has a newer, water-based version which cleans/remove with mineral spirits instead of MEK. The original DAP contact cement dries identical to MIL-A-5540 -- same tannish, transluscent residue after drying. Same flash-point, VOC properties, etc. If it's not exactly the same, it's extremely close. Thanks for your replies. It helped me link to the answers I needed. Chris |
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| Author: | cco23i [ Sat Aug 13, 2011 12:24 pm ] |
| Post subject: | Re: Commercial Equivalent to MIL-A-5540B |
MEK is ALWAYS the cleaner of choice, no matter WHAT the clean up is. Scott |
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