Thanks for another great video. Recently replaced my condenser and drier on my MK4 ALH Jetta TDI with a cheapie. I was a little shocked that there was no little baggie with o-rings included. I was in a time crunch, so I decided to toss it back together with the old o-rings and cross my fingers. I did use a quick and dirty approach with one of your tips though. Quick spritz of brake clean on the o-rings and let evaporate. Next move was silicone grease on the outside of the o-ring. If I was feeling cocky I would turn the old purple o-ring ever so slowly at risk of a tear to make the old o-ring more pliable. Seemed to have worked. Would I take that risk again? Probably not!
Brake clean, usually is not good for O-rings. Silicone grease is good . The really old O rings black ones from the 1960s and 1970s . With lacquer thinner for a few seconds soaking would make them swell a little bit. It all depends on the material they were made out of just because you’re black or just because they’re green or blue does not mean they’re all made out of the same chemistry . 99% of condensers do not come with O-rings it’s no surprise . Those are separate parts to be purchased .
Actually the coloring was only added for identification the same material as made in black but in the early years on introduction they had to Color them so people would know the difference The Ford’s coloring system was best because they put it out throughout the thickness of the whole O-ring Other manufacturers choose to just put a color coating on the surface of the O-ring but it was black underneath but the exact same material as the Ford Nowadays since 99% of home are all the same material they even stop coloring them all together and a big portion of them are all black they don’t care anymore about the color coats we had the purple ones from Volvo we had the yellow ones and then we had a really rare red ones
Just measure for less common sizes ID size,,, Measure the shaft size add .1mm [air con fitting ] OD size ,,, Measure the bore size add .1 mm [reciever hole either compressor or condenser etc ] I have a catalogue of "O" rings by OD size then match to ID
Not so easy. Summon have different inner diameter than others that were meant to compress more than others . Summer actually oval, and not round . Summer for compression Others were designed to fit into cylinders, no compression from a fastener . This is why there’s nearly 300+ different size O-rings Just take the old fashion common number six number eight number 10 and number 12 that we use since the 1950s and 1960s and 1970s things started to change into the 1980s and upwards But just a number six or a number eight there might be literally 30 different sizes that are within a few 10,000s on an outside diameter. Another one will be on the inside diameter. Another one will be on the face surface diameter is different in an oval. Some will put that extra girth on both sides evenly This is why so many guys get it wrong when they try to guess And then you cannot measure an old O-ring, because it has lost. Its elasticity is no longer has its original shape and often compressed so the old O-ring as useless.. But yes, careful measuring will get you really close And as long as you up size and don’t say hydrostatic lock because you can’t compress the solid When that happens, they don’t leak at first, but then the fastener backs out in Leaks later on
I've read that substitute o-rings should not be used if they are more than 5% undersized. Do you agree? O'Reilly's is selling their 2007 Hyundai Sonata 6-cylinder Gilmore/Import Direct compressor as acceptable for 4-cylinder Sonatas, despite the fact that one of the included 6-cylinder compressor port o-rings is 17% smaller than the same port 4-cylinder o-ring (.36" I.D. vs .42" I.D.). My research says that this will cause premature failure due to excessive stretching and cross-section distortion.
Under size is not good short life when you get old and stiff too much oversized is not good. Could you get some thing that’s like a hydrostatic lock where you think your torque wrench or wrenches tightening on the bolt cannot go anymore and you tighten it but you’re actually smashing rubber O-ring material. And then you stop tightening you think it’s good, and then two or three years later as the O-ring breaks down and loses its elasticity, the nut and bolt loosen up and it starts leaking And with oversize the possibility of snagging, ripping, damaging the O-ring, if too much oversized This is why I have hundreds of O-rings in many different sizes over and under every possible size I could mix and match to my hearts delight Specially, on those Subaru compressor hose O-rings at the fitting that always leak I always oversize those ones
Had a question about Nitrogen vs Co2 tank setups? Is it better to go for one vs the other? im assuming keeping the tank size the same co2 last longer? ive been using nitrogen to flush out cleaning agent out of lines (I get alot of empty/trashed/contaminated systems) but tank seems to run out quick....trying to see if im ok to move to co2 instead.
CO2 is considered a wet dirty gas. And it also has the tendency to chill down the system causing condensation and moisture not to mention CO2 itself loves to absorb moisture. But I guess if I wanted to use CO2 I would use it first to do all my dirty work Then I would come behind it again with the last liquid solvent flush using nitrogen. And then put it on the vacuum and with a micron gauge you can prove and measure that you have removed the majority of the moisture.
Thanks for another great video. Recently replaced my condenser and drier on my MK4 ALH Jetta TDI with a cheapie. I was a little shocked that there was no little baggie with o-rings included. I was in a time crunch, so I decided to toss it back together with the old o-rings and cross my fingers. I did use a quick and dirty approach with one of your tips though. Quick spritz of brake clean on the o-rings and let evaporate. Next move was silicone grease on the outside of the o-ring. If I was feeling cocky I would turn the old purple o-ring ever so slowly at risk of a tear to make the old o-ring more pliable. Seemed to have worked. Would I take that risk again? Probably not!
Brake clean, usually is not good for O-rings.
Silicone grease is good .
The really old O rings black ones from the 1960s and 1970s . With lacquer thinner for a few seconds soaking would make them swell a little bit.
It all depends on the material they were made out of just because you’re black or just because they’re green or blue does not mean they’re all made out of the same chemistry .
99% of condensers do not come with O-rings it’s no surprise .
Those are separate parts to be purchased .
Green orings always best and believe it or not, from Ford. They have all sized orings. But you have surely hit this situation on the mark.
Actually the coloring was only added for identification the same material as made in black but in the early years on introduction they had to Color them so people would know the difference
The Ford’s coloring system was best because they put it out throughout the thickness of the whole O-ring
Other manufacturers choose to just put a color coating on the surface of the O-ring but it was black underneath but the exact same material as the Ford
Nowadays since 99% of home are all the same material they even stop coloring them all together and a big portion of them are all black they don’t care anymore about the color coats we had the purple ones from Volvo we had the yellow ones and then we had a really rare red ones
Keep a 2.5" o-ring in your pocket at all times, casue ya never know when you might get lucky
Lol 😂
Just measure for less common sizes
ID size,,, Measure the shaft size add .1mm [air con fitting ]
OD size ,,, Measure the bore size add .1 mm [reciever hole either compressor or condenser etc ]
I have a catalogue of "O" rings by OD size then match to ID
Not so easy.
Summon have different inner diameter than others that were meant to compress more than others .
Summer actually oval, and not round .
Summer for compression
Others were designed to fit into cylinders, no compression from a fastener .
This is why there’s nearly 300+ different size O-rings
Just take the old fashion common number six number eight number 10 and number 12 that we use since the 1950s and 1960s and 1970s things started to change into the 1980s and upwards
But just a number six or a number eight there might be literally 30 different sizes that are within a few 10,000s on an outside diameter. Another one will be on the inside diameter. Another one will be on the face surface diameter is different in an oval.
Some will put that extra girth on both sides evenly
This is why so many guys get it wrong when they try to guess
And then you cannot measure an old O-ring, because it has lost. Its elasticity is no longer has its original shape and often compressed so the old O-ring as useless..
But yes, careful measuring will get you really close
And as long as you up size and don’t say hydrostatic lock because you can’t compress the solid
When that happens, they don’t leak at first, but then the fastener backs out in Leaks later on
Yes I have a list of vehicle dedicated o rings also
I've read that substitute o-rings should not be used if they are more than 5% undersized. Do you agree?
O'Reilly's is selling their 2007 Hyundai Sonata 6-cylinder Gilmore/Import Direct compressor as acceptable for 4-cylinder Sonatas, despite the fact that one of the included 6-cylinder compressor port o-rings is 17% smaller than the same port 4-cylinder o-ring (.36" I.D. vs .42" I.D.).
My research says that this will cause premature failure due to excessive stretching and cross-section distortion.
Under size is not good short life when you get old and stiff too much oversized is not good. Could you get some thing that’s like a hydrostatic lock where you think your torque wrench or wrenches tightening on the bolt cannot go anymore and you tighten it but you’re actually smashing rubber O-ring material.
And then you stop tightening you think it’s good, and then two or three years later as the O-ring breaks down and loses its elasticity, the nut and bolt loosen up and it starts leaking
And with oversize the possibility of snagging, ripping, damaging the O-ring, if too much oversized
This is why I have hundreds of O-rings in many different sizes over and under every possible size
I could mix and match to my hearts delight
Specially, on those Subaru compressor hose O-rings at the fitting that always leak
I always oversize those ones
Had a question about Nitrogen vs Co2 tank setups? Is it better to go for one vs the other? im assuming keeping the tank size the same co2 last longer? ive been using nitrogen to flush out cleaning agent out of lines (I get alot of empty/trashed/contaminated systems) but tank seems to run out quick....trying to see if im ok to move to co2 instead.
CO2 is considered a wet dirty gas. And it also has the tendency to chill down the system causing condensation and moisture not to mention CO2 itself loves to absorb moisture.
But I guess if I wanted to use CO2 I would use it first to do all my dirty work
Then I would come behind it again with the last liquid solvent flush using nitrogen.
And then put it on the vacuum and with a micron gauge you can prove and measure that you have removed the majority of the moisture.
Instead of silicon grease could you use nylog?
@@tradesman63 yes