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See full version: Lubricants and possible plastic or rubber compatibility issues


granerica
07.06.2021 19:44:49

Maybe you have have been told that the lubricant you are considering is ‘plastic safe’…. We would always recommend that a device manufacturer carries out a compatibility test, even if advised that a lubricant will have not problems with their plastic or rubber, why? Much of the raw materials for the plastic that is used in production is sourced far and wide; consider a scenario where you are producing a device in large volumes or for many years, the material in your device exhibits no compatibility problems with a grease used inside but three years later there becomes a problem. Arranging for a compatibility report for the grease and plastic used in your device at ‘day one’ ensures that you know something has changed….be that your plastics supplier has started sourcing raw material from a different source without notifying you or your grease supplier has changed the formula of the lubricant without informing you. A reputable lubricant manufacturer would NEVER change the formulation of a lubricant and keep the original product name without telling customers.


Vaschel33
01.05.2021 22:42:53

Before you move from prototype to production, consideration must be given to grease compatibility issues. Does the lubricant come into contact with any rubbers or plastics? It is true that some lubricants (both mineral and synthetic based) can cause plastics and elastomers to swell or crack over time. The swelling, cracking and even discolouration are not instant and can take many hours of exposure to the grease for the damage to occur. Care must be taken by designers to not specify materials that are incompatible in the design of a new product.


rodrick3nie
10.05.2021 4:04:43

Plastic and elastomer types are many and varied so there is no quick answer to this issue. There are some general guidelines that you should follow when considering a base oil for use with plastics or elastomers. Perfluoropolyethers (PFPE) and silicones are compatible with most plastics. Synthetic hydrocarbons (includes polyalphaolefin – PAO) can generally be used with plastics but not with elastomers; esters should be used with extreme caution with polycarbonate, polyester, polyphenylene oxide, polystyrene, polysulfone, polyvinyl chloride, Buna S, Butyl, natural rubber and neoprene. Ultimately though, the only way to ensure compatibility is through rigorous testing under high stress, high temperature and poor plastic/elastomer conditions. more


yrrryyoderj
02.05.2021 7:29:14


What makes the plastics/rubbers swell or crack? It is important to note that is not just the oil (or base oil if using a grease) that can cause problems; generally it is the oil that is the focus of problems but the additives of a grease/oil can also be a issue. Some base oils used to make a grease can be considered ‘plastic safe’ but the additives included in the formula could also cause a problem….so be careful not to just look at the base chemistry of a lubricant, leading to a false sense of confidence. here


aglenday
22.05.2021 11:35:13

It should be noted that there is nearly always a marginal amount of change in weight and dimensions when parts are exposed to the heat and/or lubricants; a small amount of change is considered the norm and is not an indication there is a serious compatibility issue, however only the customer can decide if any change will impact on the performance of the prototype part/device. Some lubricants can cause plastics and rubbers to change colour, this is generally considered an aesthetic issue but can be relevant if the part is able to be seen by customers/users. [links]


mcjohn
24.05.2021 15:27:42

If you do not have access to a testing facility, it is possible to carry out your own test. Although not as thorough as the above process, a good indicator of any possible lubricant and plastic compatibility issues could be shown by conducting your own test at ambient/room temperature; simply immerse a piece of the plastic/rubber in the appropriate oil or grease and leave in your office/workspace for an extended period of time. Remember to weigh and measure the parts before and after the test. here


davidsoul434
20.06.2021 12:14:06

Hi Alan. Sea Foam works great in any blend of gasoline or diesel fuel. Hope this helps!


Argentum
08.05.2021 4:26:21

Check out the 3 most common uses for Sea Foam Motor Treatment. You might be surprised by how people use it most! Also a quick rundown on how it all started and how Sea Foam works.


akwala
22.06.2021 15:08:16

Jim D. TECH
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muftimoh
11.06.2021 9:35:14

Hi Zain. You’ll be fine either way… and you seem to have a solid grasp. And whether you need to fill a tank or not can cause a squabble. I like to store engines with a small amount of fuel in the tank, for what it’s worth. [links]


otalesak
22.05.2021 5:26:14

Jim D. TECH
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joechip
30.05.2021 13:09:34

Hi Sean. It’s absolutely fine to mix Sea Foam with Marine PRO! Go for it! here


regina2020
02.06.2021 3:42:24

Seafoam can sit in an engine for about 5 to 15 minutes. After priming the filter, start the engine and let it run for about 2 minutes. Then turn the engine off. here


Binford 6100
02.06.2021 11:53:47

Then, allow 5 to 15 minutes for the Seafoam to properly soak into the deposit buildup. After this period, start the engine again and be ready to drive/operate it for about 30 miles. [links]


gilbertj0hn
12.05.2021 12:37:06

When you pour seafoam into your fuel tank, it removes carbon deposits from the fuel system components, which includes the fuel pump and injectors or carb jets. This can lead to improved fuel efficiency. more


fonzie77
31.05.2021 8:39:30

No, Seafoam is not bad for old engines. The product is specially formulated to re-liquify gum, varnish, sludge, as well as carbon deposits from the hard parts in the car engine to flush them out of the system. here


zmauricepittmanj
20.06.2021 7:36:19

Firstly, you need to run a troubleshooting test to ascertain the cause of the underperformance, after which you can take the necessary actions to improve your engine performance.


SmokeTooMuch
23.04.2021 12:40:59

As a side note, Chewy.com has some great accessories for your fish tank at reasonable prices. You can check out their range and offers here.


marcpage
14.06.2021 23:20:43

honestly i love the look of natural tanks… i had put natural driftwood (cleaned) in my 40g and i don’t see that as a problem, it lowers my ph levels and i keep up with it enough so my water doesn’t turn that yellowish brown. secondly i use playground sand in my tank (also cleaned) and have no issue with that.


silverman
03.06.2021 10:44:12

Hi Brittany, I’d imagine they will be fine as they’ll need to have been approved as child safe to make it into the toy industry. Thanks, Robert [links]


MYurong20
16.05.2021 20:25:08

When you add fuel to the engine, it brings all kinds of sulfur, salt, and all kinds of VOC and NOx materials (which are ozone precursors). These ingredients help with the acquisition of sludge, gum, dirt, other things. more


Fractality
26.05.2021 3:04:26

Seafoam actually benefits the engine components and increases the overall performance of the vehicle. Following are some of the advantages of this ingredient: here


gullungen
15.06.2021 9:28:37

In general, it does not do any physical damage or disfiguration to rubber, plastic, seals, O-rings, and other components found inside a motor vehicle.


Marsianin
08.05.2021 12:23:39

Seafoam is a 100% blended petroleum product. It works as an additive but there are no harmful elements used in it. It has no astringents, emulsifiers, detergents, or fillers.