Stainless Steel Breather Tube for Parker 51 Aerometric, Standard Size Brand new precision-made breather tube, manufactured to exact original Parker dimensions for standard-sized 51s. While many unrestored Aerometric 51s will suck up water (or ink) when their sacs are squeezed, that does not mean they will fill completely or write properly as found. In particular, the original sterling silver breather tube is often clogged or badly corroded, allowing the sac to fill to only a fraction of its capacity and shedding debris that does nothing to improve the reliability of ink flow. A key element of original Parker Aerometric breather tubes is the small hole drilled through one side about 6 mm from where the tube enters the feed. This hole is carefully sized and placed so as to equalize internal and external air pressure, preventing the expulsion of ink during flight. Our breather tubes retain this feature, and will enable your 51 to perform like new again. NOTE: These tubes will not fit early 51s with Vacumatic-style plunger pump fillers, nor will they fit very late production 51s with plastic breather tubes. They will fit the great majority of squeeze-filling standard-sized("Aerometric") 51s, originally equipped with a metal breather tube. For the smaller 51 "Demi", we sell the correct, shorter tubes here and here, or standard-sized tubes can be cut down as needed. Payment We are glad to combine shipping charges on multiple purchases, but it is vital that the proper checkout method be used. When buying more than one item, use the Add to Cart button -- NOT the Buy It Now button. View your cart when you are ready to complete the purchase, and if the total shipping charge is incorrect, do NOT pay. Instead, click the Request Total link at the top right and we will send you a corrected invoice. 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 run by David Nishimura (Vintage Pens LLC) based in historic Providence, Rhode Island. 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. |