Norton Petrol Tank Lipped Bottom Rubber - All Pre-Featherbed Road Models & Pre Bolthru Manx (Each)

Product no.: 0128 A2/276

In stock

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Lipped bottom tank rubber used between frame bracket and petrol tank (Sometimes this rubber has a packing Washer above it) - Four required per petrol tank. As used on most Norton single SOHC, OHV and Sidevalve petrol tanks (Pre-Featherbed). 

Price is per each. 

These 'lipped' type rubbers have a smaller diameter portion in the centre, that fits in the petrol tank casting element of Norton frames, with the wider portion sitting above - between the petrol tank and frame casting.  Then a corresponding plain 'doughnut' (Item 0129) rubber fits into a steel cup (Item 0123) under the frame casting, with a petrol tank bolt (Item 0124) fitting through all - up into the petrol tank. When the bolts are tightened, the rubbers squeeze and stop the tank from vibrating and helps stop splitting.

These rubbers are manufactured specially for RacingNorton and are made from high quality fuel/oil resistent firm rubber, which will not easily break up or soften (which is how most original and pattern ones go eventually).

Note: although Dominator models are not our speciality - we believe these same rubbers were also used on non-Featherbed framed twin Norton's - i.e. Plunger Dominator's.

We also sell a wide packing washer - Item 0126, which is often shown in Norton Spare Parts Catalogs as sitting above the lipped washer - i.e. between the petrol tank and lipped washer - its purpose being to help ensure the rubber does not get mushed out against the petrol tank bolt mount (this is part 23 in the accompanyning exploded picture, taken from the 1948 Spare Parts List).  However, in the past I have found that some petrol tanks have mounts wide enough not to require this washer fitting - and actually it can make the petrol tank bolt (our Item 0124 - which is copied from an origianl Norton item) difficult to fit.  If not sure - I can only recommend buying a set of the packing washers anyway - and see if you can fit them in - for some tanks it helps.  What is important is that the bolt is tightened up so that its shoulder fully locks against the bottom of the petrol tank - it is this that stops the bolt unwinding from vibration in use - a very common problem with this design of Norton petrol tanks 

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