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Dowty Seals / copper sealing washers
Posted: Sun Aug 22, 2010 8:25 pm
by YAMLAM
Having trouble getting weeping/ leaks from my hydraulic front brake banjos ,all items are new and i have tightened the banjo bolts up as tight as i can.
on my other hydraulic disc ( a DJ webster item from 84`

) it uses Dowty seals instead of copper washers , anybody else use these ? and anybody know what size the standard copper washers are on a ScootRS hydraulic outboard disc brake ?
Re: Dowty Seals / copper sealing washers
Posted: Sun Aug 22, 2010 8:52 pm
by newmanlammy
Most disk brake hoses use a M10 fine bolt thread. Dowty washers or bonded seals as they are known as usually come in bsp sizes but it is possible to get metric ones and I may have some M10 at work, i'll have a look tomorrow for you.
Re: Dowty Seals / copper sealing washers
Posted: Mon Aug 23, 2010 8:19 am
by YAMLAM
many thanks.
Re: Dowty Seals / copper sealing washers
Posted: Mon Aug 23, 2010 2:00 pm
by newmanlammy
Found a few M10 dowty's for you to try, pm me your address and I will post them to you.
Re: Dowty Seals / copper sealing washers
Posted: Mon Aug 23, 2010 6:58 pm
by roadrunnerian
i used dowty washers on my hyd brake system they worked a treat.

Re: Dowty Seals / copper sealing washers
Posted: Mon Aug 23, 2010 9:23 pm
by YAMLAM
Pm sent .
Thanks.
Re: Dowty Seals / copper sealing washers
Posted: Mon Aug 23, 2010 10:46 pm
by sydduckett
How good was that.....

Re: Dowty Seals / copper sealing washers
Posted: Mon Aug 23, 2010 11:17 pm
by wack 63
The main problem is the shank is too long on the RS banjo bolt and bottoms before it crushes the washer.
Re: Dowty Seals / copper sealing washers
Posted: Tue Aug 24, 2010 7:57 pm
by YAMLAM
i recon your right wack, two mates have had the same problem, hoping the dowty`s are slighly deeper, otherwise ,it`s grinder time .

Re: Dowty Seals / copper sealing washers
Posted: Tue Aug 24, 2010 10:33 pm
by shocky
wack 63 wrote:The main problem is the shank is too long on the RS banjo bolt and bottoms before it crushes the washer.
what he said also the bango can vary in thickness i had this prob when i changed the standard scootrs hose for a stainless one from a well known dealer i ended up using a bolt from a dragster as there about 3mm shorter