Thread: pwr steering fitting seal

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Ok guys what is best to replace the Nylon/Teflon washer that acts as a seal for the fitting on my rack and pinion ? I when tightened the fitting I split it in 2. Wondering if a copper washer wouldn't be better, the Rack is aluminium, the fitting is steel. Thanks for the inputs.

I would try a soft copper washer (like a brake crush washer) as long as its not to thick to hamper the proper thread engagement, I would also put a little antisieze on the threads and on your washer as a lubricant that way the fitting will not try to "bite" the washer when tightening which is probably what tore it originally. Best of luck Matt

Originally Posted by Matthyj

I would try a soft copper washer (like a brake crush washer) as long as its not to thick to hamper the proper thread engagement, I would also put a little antisieze on the threads and on your washer as a lubricant that way the fitting will not try to "bite" the washer when tightening which is probably what tore it originally. Best of luck Matt

Saw a tech tip a while back about making your own copper washer from a chunk of soft copper tubing, squeezed down in a vice around a right sized bolt and a piece of steel pipe/tube, if you can't find one the right size.

X2 on the copper washer.

Measure the thread size and try summit racing. They have a big selection of copper or aluminum crush washers. My Flaming River aluminum rack needed special fittings with o-rings on the OD of the fitting, not crush washers.

Fragola Performance Systems AN to Metric Adapter Fittings 491962-BL - Free Shipping on Orders Over $99 at Summit Racing

Fragola Performance Systems AN to Metric Adapter Fittings 491963-BL - Free Shipping on Orders Over $99 at Summit Racing


Yours looks to be machined flat, so a crush washer fitting may be the correct one to use.

Crush Washers - Free Shipping on Orders Over $99 at Summit Racing

Navy, Check under the fitting for an O-ring recess in the rack, it may be designed for an O-ring as noted above. While I normally just read here, I was compelled to reply because i just saw these in a Speedway Motors catalog. I've been trying to round up all the fittings for a similar job. Like this:
Power Steering Fitting, -6 AN to 14mm-1.5 O-Ring
They make them in different thread sizes.

there are some applications where the power steering fittings have an o-ring on the point that seals down at bottom of hole -----
Steel Power Steering Box Adapter Fitting 16mm-1.5 IFM/-6 AN, 80-Up GM

Originally Posted by jerry clayton

there are some applications where the power steering fittings have an o-ring on the point that seals down at bottom of hole -----
Steel Power Steering Box Adapter Fitting 16mm-1.5 IFM/-6 AN, 80-Up GM

Thanks Jerry , My old rack used that type but not on the new one, wish it did.

Originally Posted by JOATMON

Navy, Check under the fitting for an O-ring recess in the rack, it may be designed for an O-ring as noted above. While I normally just read here, I was compelled to reply because i just saw these in a Speedway Motors catalog. I've been trying to round up all the fittings for a similar job. Like this:
Power Steering Fitting, -6 AN to 14mm-1.5 O-Ring
They make them in different thread sizes.

Hey Joatmon thanks for the link, I wish mine has a recess for a o-ring but its flat as as a pancake. It uses a thin nylon o-ring of sorts. I just seem to over tighten them a weeeeee to much.