Spark plug boots

[Jerr46]

Can any Recommend a product to use to mold distributor and spark plug boots? There are so many different types of silicones out there I don’t know which one to use. Thanks

 

[stevehuckss396]

https://www.micromark.com/Silicone-Putty-1-lb-_2

 

[Peter Twissell]

I have used a 2 pack pourable material (as opposed to putty):

https://www.mbfg.co.uk/pt-flex-20-r...sgs1PhOJpUq-eoh0vr9qdm_XVOvzo1_AaAptIEALw_wcB

 

[bluejets]

DuroFlex 85 Polyurethane Liquid Casting Rubber 500g Kit

https://www.micromark.com/Silicone-Putty-1-lb-_2

 

[Aussie_Novice_64]

I've used regular silicon mixed with corn flour to make a putty and then pushed into a mold.
Result was better than expected.

 

[Charles Lamont]

I have made 2-piece delrin plug caps following Graham Meek's design. The design is clever, works well, and the result very neat. The little brass clip inside looks a fiddly job, but I did not find it as difficult as I expected. Find his write-up and drawing here: https://modelengineeringwebsite.com/Miniature_spark_plugs_2.html

 

[Gordon]

I have had pretty good luck making boots with a 3D printer using TPU filament. It took a few tries to get it right.