Theoben Rapid MK2 regulator seal info. please

[deejayuu]

Thanks for looking. Can anyone say regulator piston seal sizes and reliable supplier please? A kit is acceptable too

[angrybear]

How's this
unique and rare boy names

For a kit try the bay, seller A1tackleshop, or just order by BS number from any O ring supplier.

[deejayuu]

Many thanks for the support @angrybear.Unfortunately our piston is different to the one on that list. One less step diameter and not the same dimensions
The grooves measure 4 x 1.1 and 7 x 1.1 and tried 4 x 1 and 7 x 1 seals which make a light sliding fit but weep at the breather.
I make the bore dia. 6 mm and 9 mm.

[Blackmax]

Hi mate. Sounds like you have an early circlip reg? If so O rings are 4 x 1.2mm and 8 x 1.2mm.

[Blackmax]

Hi mate. Sounds like you have an early circlip reg? If so O rings are 4 x 1.2mm and 8 x 1.2mm.

Some had 7 x 1.2mm.

[kevG]

they are 4 x1 and the larger of the 2 orings come in 2 variants,7x1 and 8x1 ,depending on the diameter of the core at the thickest part, which can come in 8.9mm and 9.9 mm
KevG

[deejayuu]

Many thanks again @kevg. @Blackmax, and all. Tried the 4 x 1 and 7 x 1 which still weep. Going for 1.2 option now.

[kevG]

strange it still leaks,maybe the the body needs a polish interaly or core needs a polish were orings sit,you have to think this reg will be around 20 years old now.i would also check the sealing face on the core as this needs to be flat and smooth else you will get creep.
KevG