12 new 100% silicone fountain pen ink sacs -- assorted, 4 different sizes

£18.71 Buy It Now 10d 23h, £3.90 Shipping, 14-Day Returns, eBay Money Back Guarantee

Seller: vintagepens (5,156) 99.7%, Location: Providence, Rhode Island, Ships to: Worldwide, Item: 141751477888 Silicone Pen Sac Assortment 100% silicone, a dozen (12) in four sizes Brand new sacs, sizes 14, 15, 17, and 18½ (size numbers denote the smallest inside barrel diameter a given size will fit, in 64th of an inch). These sizes cover the range used by the great majority of vintage fountain pens. You will get three of each size, for a total of twelve (12) sacs. Note that these sacs are not in fact necked: the thinner part at the mouth end is the mold sprue, intended to be trimmed off. Silicone sacs will not discolor vintage celluloid, and can be used with the most reactive inks -- inks that can turn conventional latex rubber sacs to goo in a matter of weeks. A silicone sac will easily outlast several conventional sacs. Silicone sacs are best attached with a silicone cement, such as Devcon Silicone Adhesive 12045. As far as we know, these are the only 100% silicone sacs currently on the market. Other sacs advertised as silicone are not: while they may contain some silicone, testing has shown that they are mostly PVC, otherwise known as vinyl. They are not as durable as pure silicone, and as PVC ages it sweats a plasticizer that will attack celluloid and other cellulosic plastics. Many PVC sacs are also too stiff to work properly with pneumatic-fillers. NOTE: Silicone is more permeable than latex to air and water vapor. Ink will dry out more rapidly in an unused pen with a silicone sac, and it is advisable to leave a silicone-sacked pen with its nib elevated when not in use to prevent gradual ink seepage into its feed. For more information on sac material choice, please see the Pen Sac Primer on our website. We have over 25 years of experience in vintage pen restoration and tuning. Unless otherwise noted, our pens have been fully reconditioned and are ready to write. Authenticity is guaranteed. Payment We are glad to combine shipping charges on multiple purchases. If you are buying more than one item and the shipping charges are not calculated correctly, please let us know and wait to pay until we can adjust the shipping charges manually. Terms of Sale We strongly believe in full and explicit description of any condition problems or flaws, and in very conservative grading. We stand behind our descriptions -- buy with confidence.About Us vintagepens is the eBay name of David Nishimura, doing business in Rhode Island as Vintage Pens LLC. David has been buying, selling, and writing about old writing instruments since the late 1980s. He has been on eBay since 1997, the same year he launched one of the first vintage pen collecting websites. David is an active pen history blogger, and a regular presence on pen collecting forums and social media, as well as at traditional pen shows. Contact David Nishimura Vintage Pens LLC PO Box 41452 Providence RI 02940-1452 Condition: New, Pen Type: Fountain

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