What size are the replacement o rings in the prestacycle set?
Bicycles Asked on February 6, 2021
https://www.crosslakesales.com/products/prestacycle-prestaflator-tool-rebuild-kit-o-ring-new
I asked the company that manufactures them, they said they didn’t know.
Does anyone know the sizes? I ask because the set is not available in the UK. Flying it over the Atlantic seems ridonkulous when I could just buy some o rings here.
2 Answers
Based on the photo in the question the big O ring is 12 mm outside to outside. The O ring rubber is 2 mm thick.
Googling tells me:
O-rings made from high quality buna-nitrile (BN70) rubber with a durometer rating of 70.
This is proportional to the inventory sticker being 12.0mm high as per all the ones I found in my house.
There appear to be two other sizes in the bag as well, one smaller and one thicker like a tap washer.
Given this bag of parts is $3.95 USD from several LBS and from Amazon its hardly worth messing about. If the freight is too much, ask for an envelope not a parcel or order more things to make it worthwhile.
Answered by Criggie on February 6, 2021
Got mine from AliExpress 10X5X2.5mm O seal ring for US$2.
Tested it and it fix perfect.
Answered by Ron Chan on February 6, 2021
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