One size 20 latex rubber sac for fountain pen restoration.
Please note: Price is per sac. Pen sacs are measured in 64ths of an inch diameter. Most sacs will need to be trimmed prior to use and are intentionally made longer than necessary.
I bought size 18, 19, and 20 ink sacs for a 1950's vintage Watermans lever fill fountain pen with a 9mm nipple on the grip section. I didn't know which would fit best. The 18 was the best fit for the pen, but the quality of the others are good too. I bought 3 of each and the unused ones went into my supplies drawer. The 19 and 20s are the right size for my 1930's vintage Salz Brothers and Stratford fountain pens.
I do not do enough of this to know if there are differences in sacs apart from the size and the material. The sacs I used worked well for me and my pens are working again. I appreciated the packaging in that it was easy for me to understand which sacs were which, they did not just throw them all into the box and force me to figure it out. They always pay attention to detail. I bought a variety of sizes.
