5/16 / 8mm compression fittings and pipe

[saltyrob]

Hi Folks

I know 5/16 and 8 mm are very close but is it ok to use 8 mm compression fittings on 5/16 mm copper pipe or visa versa ,for diesel fuel line.

Also is there any special requirement for diesel lines as similar tube is used for gas and plumbing

Many thanks

Rob

 

[David2452]

Use the right olives, copper is best, you would be unlikely to get a decent quality 5/16" olive on 8mm tube as they are quite close tolerance, you may get away with 8mm on 5/16" but why risk it?
Decent quality 8mm and 5/16" tube and fittings are available from BES at good prices.

 

[Contest1]

Use the right olives, copper is best, you would be unlikely to get a decent quality 5/16" olive on 8mm tube as they are quite close tolerance, you may get away with 8mm on 5/16" but why risk it?
Decent quality 8mm and 5/16" tube and fittings are available from BES at good prices.

+1