Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Thread lock on brake fittings?
View Single Post
  #8 (permalink)  
Old 03-30-2011, 09:38 AM
T-bucket23's Avatar
T-bucket23 T-bucket23 is offline
Hotrodders.com Moderator
 
Last wiki edit: Engine basic condition - how to check Last photo:
Join Date: Aug 2005
Location: Massachusetts
Age: 57
Posts: 5,208
Wiki Edits: 26

Thanks: 7
Thanked 116 Times in 101 Posts
Quote:
Originally Posted by Frisco
NOT so! There are several brake line fittings (T connections, thru frame connections, fittings for hydraulic brake light switch) that use 1/8" NPT threads. If the fittings are quality made brass material, no thread sealant should be required. Definitely no locking compound. I have used a single wrap of teflon tape on occasion.

Where a flare connection is used, then NO tape, lubricant, sealer, etc. should be used. A correctly formed double flare will seal without excessive torque being applied. For the poster who asked about tightening (or over tightening) a flare connection, check the flare of the tubing and the seat in the fitting. If the flare is off center it will not seal. If the seat of the fitting has been crushed from over tightening it will not seal and should be replaced. If you are using a single flare for non AN fittings, this style of flare will crack and not seal and is illegal for use on brake lines (with the exception of AN fittings) in the U.S.
A brake lite switch is not a brake line it has pipe thread and is designed to seal with the threads. If you are connecting a LINE to it it needs a flare. All the through the frame fittings I have seen are flared on both sides, how else would the line seal.
Brakes are nothing to screw around with, get the right parts and do it right or you are risking your life
__________________
Artificial Intelligence is no match for Natural Stupidity



Chet
Reply With Quote