Gladhand seal installation direction.. A question

Discussion in 'Experienced Truckers' Advice' started by ncmickey, Aug 26, 2025.

  1. FLHT

    FLHT Road Train Member

    1,403
    2,467
    Aug 2, 2014
    0
    I use the ones with the screens in them.
    Keeps the critters from moving in..
     
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. MacLean

    MacLean Road Train Member

    1,317
    3,906
    Sep 12, 2017
    0
    Put some oil or grease on it.
     
  4. SmallPackage

    SmallPackage Road Train Member

    5,535
    17,635
    Dec 20, 2019
    Marion Texas
    0
    There is one particular one (cannot remember brand) that i have seen a few times that the grommet goes in big side first. That is the only way it will fit. It leaves a very thin o-ring size seal. They don’t couple very good with others. Those are the throw away one’s in my mind.
     
    Oxbow, JolliRoger and ncmickey Thank this.
  5. Ex-Trucker Alex

    Ex-Trucker Alex Road Train Member

    1,439
    2,454
    Jan 7, 2023
    0
    I think that driver is a couple pallets short of a truckload....
    Petroleum will DESTROY rubber; only do this with non-rubber grommets. Even then......why????
     
    tscottme and ncmickey Thank this.
  6. ncmickey

    ncmickey Road Train Member

    3,837
    7,171
    Jun 21, 2013
    Durham NC
    0
    Well, it’s good to know I haven’t been doing it wrong for the last 11 years…
     
  7. MACK E-6

    MACK E-6 Moderator Staff Member

    49,251
    230,490
    Sep 19, 2005
    Baltimore, MD
    0
    A while back I had problems with them sticking together, so I asked about on here to see what other people do about that. One person suggested installing them backwards, which seemed to mitigate that issue.
     
    ncmickey Thanks this.
  8. JolliRoger

    JolliRoger Road Train Member

    17,548
    146,243
    May 8, 2007
    Mississippi
    0
    What you are describing is the only kind I ever used 51 to 58. They were like a large fitted portion which went in the gladhand first, and the outer side of it would stick out like a 1/8th " length of 1/2" pipe sized. Mated perfectly with the trailer glad's as the same there.

    Sure glad you brought this up, as I had been searching for "old style" seals and no luck. Thought my time had passed completely. Whew...

    Every tractors glove box had a few in it, as dry they would tend to get a wrinkle and leak. So sharp minds would smear a little grease from 5th plate lip on trailer up to make them hook smooth. Of course, the grease deteriorated the rubber to a softness and would not seal.
    So, you learned to examine both connections, found wanting, just put in all 4 new. Held the hose away from you, spit on the seal, hooked up smooth airtight. Last years with J.T. Garard, I had the same black trailer, so no problem.

    (In later years they made them out of a hard poly and hooked smoother, less spit.)
     
    SmallPackage, ncmickey and MACK E-6 Thank this.
  9. Coolbreezin

    Coolbreezin Medium Load Member

    402
    418
    Jun 11, 2016
    Florida
    0
    I was told years ago that petroleum jelly will keep the rubber soft for a better seal. I used it on my seal on the sunroof of my truck for years without issue.
     
    DannyB and JolliRoger Thank this.
  10. Turdzthaword

    Turdzthaword Light Load Member

    253
    415
    Aug 30, 2020
    0
    *Relevant tip*
    Remember to remove gladhand seals from trailer whenever you drop in Laredo. You'll probably need them when picking up at a different location in the same city.
     
  11. SmallPackage

    SmallPackage Road Train Member

    5,535
    17,635
    Dec 20, 2019
    Marion Texas
    0
    Then you know all about then old glad hands made out of cast iron that Bendix-Westinghouse supplied with almost every tractor set up. My old ‘51 Diamond T still has the originals. They were real and never wore out.
    image.jpg image.jpg
     
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.