Bubble Flare

Kenney Kelley · 06-29-2022, 12:00 PM

I recently bought a tube flaring kit for three different types of tubing flares. I know how to do flares on Copper tubing , Double flares on Brake lines but i've never heard the word Bubble Flare used or where they're used. My question is where are they used? and what kind of tubing are they used on?

Thanks Kenney Kelley

Mike Jones · 06-29-2022, 12:41 PM

https://4lifetimelines.com/blogs/kno...r-double-flare

Jim Whitehead · 06-29-2022, 02:37 PM

Bubble flare is very common on todays automobiles, You mostly see it on 3/16 brake line

garyc · 06-30-2022, 08:38 AM

basically a double flare and not doing second step

John Dinkel · 06-30-2022, 12:10 PM

Bubble flares are used on brake lines

Kenney Kelley · 07-01-2022, 11:24 AM

Thanks to everyone who answered my question. I knew the Bubble Flare was different from the others because it required a different flaring cone all together and i had never seen one so that's the reason why I asked. Once again thanks for the response.

Kenney Kelley

Larry Hill · 07-02-2022, 07:43 AM

I’m never to old to learn. Thanks everyone

FireSale · 07-12-2022, 12:11 PM

A bit late but a bubble flare is a European standard and not common on US cars. Not sure its road legal in this country. Inverted double flare is stronger. Always match flares and fittings. Here's a chart.

https://www.mpbrakes.com/images/MPB-F200-22.pdf

SSDiv6 · 07-12-2022, 07:06 PM

A word of caution.
If you are using a bubble flare, make sure the mating components are designed for a bubble flare. The flare has a different shape and will not fit into double flare connections. You cannot connect a bubble flare to a double flare seat.

They have a built in crush surface which means that the flare can not be reused. You also can not connect a bubble flare to a double flare seat.

Todd Boyer · 08-07-2022, 11:19 PM

They've been around for a while on European cars at least. I'm working on an '81 Porsche 911, its brake system has all bubble flares.

06-29-2022, 12:00 PM	#1
Kenney Kelley Member Join Date: Dec 2006 Location: Cocoa Florida Posts: 200 Likes: 173 Liked 71 Times in 35 Posts	Bubble Flare I recently bought a tube flaring kit for three different types of tubing flares. I know how to do flares on Copper tubing , Double flares on Brake lines but i've never heard the word Bubble Flare used or where they're used. My question is where are they used? and what kind of tubing are they used on? Thanks Kenney Kelley

06-29-2022, 12:41 PM	#2
Mike Jones VIP Member Join Date: Apr 2012 Location: Connecticut Posts: 1,110 Likes: 1,166 Liked 660 Times in 283 Posts	Re: Bubble Flare https://4lifetimelines.com/blogs/kno...r-double-flare

06-29-2022, 02:37 PM	#3
Jim Whitehead Member Join Date: Mar 2003 Location: MA. Posts: 276 Likes: 128 Liked 145 Times in 38 Posts	Re: Bubble Flare Bubble flare is very common on todays automobiles, You mostly see it on 3/16 brake line

06-30-2022, 08:38 AM	#4
garyc Member Join Date: Mar 2021 Posts: 124 Likes: 0 Liked 51 Times in 30 Posts	Re: Bubble Flare basically a double flare and not doing second step

06-30-2022, 12:10 PM	#5
John Dinkel Senior Member Join Date: Nov 2005 Location: Pinckney, Michigan Posts: 502 Likes: 354 Liked 233 Times in 62 Posts	Re: Bubble Flare Bubble flares are used on brake lines __________________ John Dinkel 3295 STK

07-01-2022, 11:24 AM	#6
Kenney Kelley Member Join Date: Dec 2006 Location: Cocoa Florida Posts: 200 Likes: 173 Liked 71 Times in 35 Posts	Re: Bubble Flare Thanks to everyone who answered my question. I knew the Bubble Flare was different from the others because it required a different flaring cone all together and i had never seen one so that's the reason why I asked. Once again thanks for the response. Kenney Kelley

07-02-2022, 07:43 AM	#7
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,284 Likes: 1,638 Liked 9,461 Times in 1,960 Posts	Re: Bubble Flare I’m never to old to learn. Thanks everyone __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

07-12-2022, 12:11 PM	#8
FireSale VIP Member Join Date: Feb 2014 Location: Lakewood Washington Posts: 1,407 Likes: 29 Liked 236 Times in 127 Posts	Re: Bubble Flare A bit late but a bubble flare is a European standard and not common on US cars. Not sure its road legal in this country. Inverted double flare is stronger. Always match flares and fittings. Here's a chart. https://www.mpbrakes.com/images/MPB-F200-22.pdf __________________ Dale Shearon 68 Mustang 6394

07-12-2022, 07:06 PM	#9
SSDiv6 VIP Member Join Date: Feb 2003 Location: Glendale, Arizona Posts: 2,991 Likes: 693 Liked 1,457 Times in 543 Posts	Re: Bubble Flare A word of caution. If you are using a bubble flare, make sure the mating components are designed for a bubble flare. The flare has a different shape and will not fit into double flare connections. You cannot connect a bubble flare to a double flare seat. They have a built in crush surface which means that the flare can not be reused. You also can not connect a bubble flare to a double flare seat.

08-07-2022, 11:19 PM	#10
Todd Boyer Senior Member Join Date: Feb 2004 Location: Saint John NB Canada Posts: 560 Likes: 27 Liked 6 Times in 5 Posts	Re: Bubble Flare They've been around for a while on European cars at least. I'm working on an '81 Porsche 911, its brake system has all bubble flares.