Harley Davidson Forums

EVO All Evo Model Discussion

Thread Sealant Quick Question

Thread Tools
 
Search this Thread
 
Old Apr 22, 2026 | 06:55 PM
Share
  #1  
cwhite6's Avatar
cwhite6
Thread Starter
|
Road Captain
15 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2011
Posts: 538
Likes: 281
From: Pineville, LA
Default Thread Sealant Quick Question
About to put on the rear brake line including the fitting the stoplamp switch screws into. I do not trust this chrome fitting and stoplamp switch to not leak. I know I can put a small amount of tape on it, but I also have the Permatex Thread Sealant with PTFE. Seems it should work also. What says the forum? Tape (I will get the oil resistant tape and not use teflon) or the sealant?
 
Reply
0
Old Apr 22, 2026 | 09:00 PM
Share
  #2  
Max Headflow's Avatar
Max Headflow
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,997
Likes: 8,065
From: poway
Default
Either is fine for me.. Teflon tape is fine. It's fine for fuel, oil, brake fluid.
 
Reply
2
Old Apr 23, 2026 | 06:54 AM
Share
  #3  
Joe12RK's Avatar
Joe12RK
Seasoned HDF Member
10 Year Member
Loved
Community Favorite
Top Answer: 1
Joined: Jun 2012
Posts: 6,165
Likes: 2,578
From: CT/FL
Default
I prefer paste, because it never breaks off inside. Just go easy on it.
 
Reply
2
Old Apr 23, 2026 | 07:01 AM
Share
  #4  
cwhite6's Avatar
cwhite6
Thread Starter
|
Road Captain
15 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2011
Posts: 538
Likes: 281
From: Pineville, LA
Default
Thank-you gentlemen.
 
Reply
0
Old Apr 23, 2026 | 07:25 AM
Share
  #5  
Architect's Avatar
Architect
Seasoned HDF Member
15 Year Member
Joined: Apr 2010
Posts: 9,599
Likes: 7,982
From: Long Island, New York
Default
I was using tape and get schooled by JohnZ to use paste. Works better and honestly easier to use. Teflon tape was not great for gasoline, not sure what brake fluid would do to it.
 
Reply
1
Old Apr 23, 2026 | 08:11 AM
Share
  #6  
MURPHCC1's Avatar
MURPHCC1
Club Member
Joined: Apr 2013
Posts: 5,928
Likes: 3,918
From: Cape Cod
Default
Brake fluid destroys Teflon tape, possibly getting in the the system itself and wreaking havoc in there.
 
Last edited by MURPHCC1; Apr 23, 2026 at 08:13 AM.
Reply
2
Old Apr 23, 2026 | 11:49 AM
Share
  #7  
chopper_man's Avatar
chopper_man
Stellar HDF Member
Veteran: Army
10 Year Member
Liked
Community Favorite
Joined: Apr 2016
Posts: 3,339
Likes: 2,127
From: Masshole
Default
I'm a stickler when it comes to using the correct sealant for a specific job. In this case Permatex Pneumatic / Hydraulic Sealant is called for.
Amazon Amazon

 
Reply
0

Trending Topics

Old Apr 23, 2026 | 01:32 PM
Share
  #8  
cwhite6's Avatar
cwhite6
Thread Starter
|
Road Captain
15 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2011
Posts: 538
Likes: 281
From: Pineville, LA
Default
The back of the bottle for the permatex thread sealant also says used for hydraulic installations. It should be good also.
 
Reply
0
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

10 Most Awkward-Looking Motorcycles Ever Built

 Verdad Gallardo
story-1

Jason Momoa Is Turning Classic Harleys Into PHEVs

 Verdad Gallardo
story-2

Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

 Verdad Gallardo
story-3

6 Weirdest Harley-Davidsons Ever Sold to the Public

 Verdad Gallardo
story-4

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-5

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-6

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-7

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-8

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-9

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
Old Apr 23, 2026 | 02:39 PM
Share
  #9  
Uncle Larry's Avatar
Uncle Larry
Seasoned HDF Member
Veteran: Army
15 Year Member
Joined: Jan 2011
Posts: 157,581
Likes: 57,136
From: Michigan 15 Minutes East Of Hell
Default
Just a thought ... Hydraulic fluid and brake fluid are two different animals ??
 
Last edited by Uncle Larry; Apr 23, 2026 at 04:39 PM.
Reply
0
Old Apr 23, 2026 | 02:51 PM
Share
  #10  
cwhite6's Avatar
cwhite6
Thread Starter
|
Road Captain
15 Year Member
Liked
Loved
Community Favorite
Joined: Jan 2011
Posts: 538
Likes: 281
From: Pineville, LA
Default
I mean, they are essentially hydraulic brakes. DOT 5 is a silicon based hydraulic fluid which should be even easier on the sealant that petroleum based hydraulic fluid.
 
Reply
0



Advanced Search
Reply Closed Thread Share
Forum Jump

All times are GMT -5. The time now is 12:09 AM.

story-0
10 Most Awkward-Looking Motorcycles Ever Built

Slideshow: Not every motorcycle can be a design icon, and these machines prove that bold styling doesn't always age gracefully.

By Verdad Gallardo | 2026-06-12 11:58:41


VIEW MORE
story-1
Jason Momoa Is Turning Classic Harleys Into PHEVs

Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.

By Verdad Gallardo | 2026-06-10 17:18:58


VIEW MORE
story-2
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom

Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.

By Verdad Gallardo | 2026-06-03 18:28:05


VIEW MORE
story-3
6 Weirdest Harley-Davidsons Ever Sold to the Public

Slideshow: From military-inspired singles to scooters and three-wheel utility vehicles, these Harleys took the company far outside its comfort zone.

By Verdad Gallardo | 2026-06-02 18:34:10


VIEW MORE
story-4
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-5
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-6
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-7
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-8
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-9
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE