(This page revised August 1, 2019)
[ Reference Info Index | Glossopedia ]
| Chilton | Conklin | Esterbrook | Eversharp | Ingersoll (Chas. H.) | Moore |
| Parker | Sheaffer | Wahl | Waterman |
The charts on this page are a guide to choosing appropriate sac sizes for various sac-filling pens. The sizes listed here are not the sizes the original manufacturers used. Pen manufacturers chose the largest sacs they could cram into their pens in order to yield the greatest possible ink capacity, but there are some drawbacks to that method:
A larger sac is more difficult to insert into the barrel. Even if coated with talcum powder, it can bind against the barrel wall or the pressure bar, and it can twist and crinkle as the repairer tries to stuff it all the way in.
Because modern repairers are dealing with used pens, pressure bars can be distorted and there can be buildup on the surface of the pressure bar or barrel wall. These conditions make it even more difficult to fit a sac of the original size.
Because more of its surface is in contact with the barrel wall, a larger sac absorbs heat from the user’s hand more readily than will a smaller sac. This causes any air in the sac to expand, increasing the pen’s flow unpredictably and possibly causing the pen to blot, especially when it is nearly empty.
For these reasons, the charts recommend sacs that are usually one or two sizes smaller than the sizes originally used; but in some cases, the difference can be as great as four sizes. In most cases, the smaller sac size vitiates the need for a necked sac; unless otherwise specified, all sacs listed here are straight sacs. For pens not listed, choose the largest sac that drops freely into the barrel with the pressure bar in place.
Instructions for resacking many pens are available on this site, as follows:
Lever fillers, most brands
Parker Vacumatic, including the “51”
| Chilton Pens | |
| Pen Model(s) | Sac Size |
| Chiltonian | 18 |
| Golden Quill | 18 |
| Wing-flow (standard girth) | 18 |
| Conklin Pens | |
| Pen Model(s) | Sac Size |
| Duragraph (lever filler) | 21 |
| Endura (slender girth) | 17 |
| Endura (standard girth) | 21 |
| Glider (slender girth) | 15 |
| Glider (standard girth) | 17 |
| Symetrik (standard girth) | 17 |
| 2NL, 2P, 20, 20P Crescent-Filler | 17 |
| 25P Crescent-Filler | 15 |
| 3NL, 3P, 30, 30P Crescent-Filler | 17 |
| 4NL, 4P, 40, 40P Crescent-Filler | 18 |
| 5NL, 50 Crescent-Filler | 20 |
| 6NL, 60 Crescent-Filler | 21 |
| 75 Crescent-Filler | 22 |
| Esterbrook Pens | |
| Pen Model(s) | Sac Size |
| C, CH (J-series “purse” pens) | 16 |
| Deluxe (SM, LK) | 16 |
| Dollar Pen Size B (standard girth) | 18 |
| Dollar Pen Sizes A and H (slender girth) | 16 |
| J, LJ, SJ | 16 |
| M2 (squeeze filler) | 16 |
| Safari (lever filler) | 16 |
| Safari Plunger-Fill | Ink-Vue (full size) |
| Wahl Pens | |
| Pen Model(s) | Sac Size |
| Coronet | 16 |
| Doric (slender girth); includes Doric Junior | 15 |
| Doric (standard girth); includes Popular Doric | 17 |
| Fifth Avenue | 16 |
| Metal pens, No 2 nib (ringtop, 3" long) | 15 |
| Metal pens, No 3 nib (clip or ringtop, 4" long) | 16 |
| Metal pens, No 4 nib (clip, 5" long) | 19 |
| Metal pens, No 5 nib (clip, 4" long) | 20 |
| Pacemaker (slender girth) | 15 |
| Pacemaker (standard girth) | 18 |
| Personal Point (oversize) | 20 |
| Personal Point (slender girth) | 16 |
| Personal Point (standard girth) | 18 |
| Sixty Four | 16 |
| Skyline Demi | 16×2 NT |
| Skyline Executive | 18 |
| Skyline Standard | 16×2 NT |
| Slim Ventura (squeeze filler) | 15 |
| Symphony, 1st generation (Loewy) | 15×2 NT |
| Symphony, 2nd & 3rd generations | 17 |
| Ventura | 16 |
| Chas. H. Ingersoll Pens | |
| Pen Model(s) | Sac Size |
| Bakelite twist filler | 20 |
| Metal twist filler | 22 |
| Moore Hard Rubber Pens | |
| Pen Model(s) | Sac Size |
| 82, L-82 | 13 |
| 83, L-83 | 14 |
| 84, L-84 | 15 |
| 85, L-85 | 17 |
| 86, L-86 | 20 |
| 92, L-92 | 13 |
| 93, L-93 | 14 |
| 94, L-94 | 15 |
| 95, L-95 | 17 |
| 96, L-96 | 20 |
| Moore Celluloid Pens | |
| Pen Model(s) | Sac Size |
| Finger tip (96-B) | 17 |
| 82, L-82 | 14 |
| 83, L-83 | 15 |
| 84, L-84 | 16 |
| 85, L-85 | 18 |
| 86, L-86 | 22 |
| 92, 92-A, L-92 | 15 |
| 93, L-93 | 15 |
| 94, 94-A, L-94 | 16 |
| 95, L-95 | 18 |
| 96, 96-A, L-96 | 20 |
| Parker Pens | |
| Pen Model(s) | Sac Size |
| Duette Jr. “Thrift Time” | 15 |
| Duette Sr. “Thrift Time” | 17 |
| Duofold Geometric (“Toothbrush”), slender girth | 15 |
| Duofold Geometric (“Toothbrush”), standard girth | 17 |
| Duofold Jr., Duofold Special | 16 |
| Duofold, Lady | 15 |
| Duofold Senior | 19 |
| Duofold, Striped, Junior (button-filler) | 16 |
| Jack-Knife Safety 20, 20 | 15 |
| Jack-Knife Safety 23, 23 | 15 |
| Jack-Knife Safety 26, 26 | 19 |
| Moderne “Thrift Time” (Canadian) | 15 |
| Parkette Zephyr | 14 |
| Pastel (larger size) | 15 |
| Pastel (smaller size) | 12 |
| Premier “Thrift Time” (Canadian) | 17 |
| Raven | 15 |
| True Blue | 15 |
| Vacumatic Junior, standard girth (Lockdown) | Standard Diaphragm |
| Vacumatic Maxima (Speedline or plastic plunger) | Standard Diaphragm |
| Vacumatic Oversize (Lockdown) | Oversize Diaphragm |
| Vacumatic Senior Maxima (Speedline) | Oversize Diaphragm |
| Vacumatic Standard (Lockdown) | Standard Diaphragm |
| All Vacumatic-filling pens not listed | Deb Diaphragm |
| VS | 16 |
| “51” Aero-metric Demi/Slender | See note below |
| “51” Aero-metric Standard | Pli-Glass |
| Sheaffer Pens | |
| Pen Model(s) | Sac Size |
| Autograph (postwar, largest size) | 19 |
| Balance (oversize) | 20 |
| Balance (slender girth) | 15 |
| Balance (standard girth) | 17 |
| Fineline | 17 |
| Lifetime Flat-Top (celluloid, slender girth) | 15 |
| Lifetime Flat-Top (celluloid, standard girth) | 16 |
| Lifetime Flat-Top (celluloid, oversize) | 20 |
| PFM | 17×2 N |
| Snorkel | 14×2 N |
| Touchdown TM | 15×2 N |
| Touchdown (1949 “fat”) | 17×1 N |
| 2 Self-Filling, 2A Self-Filling | 14 |
| 4 Self-Filling | 16 |
| 5 Self-Filling | 17 |
| 3-25 | 15 |
| 5-30 (slender girth) | 15 |
| 5-30 (standard girth) | 17 |
| 7-30 | 19 |
| 22 Student Special | 14 |
| 46 Special (slender girth) | 14 |
| 46 Special (standard girth) | 16 |
| Waterman Hard Rubber Pens | |
|
Note: overlay pens use same sac sizes as
basic models; e.g., 452 uses same sac as 52. |
|
| Pen Model(s) | Sac Size |
| 5 “Ripple” | 15 |
| 7 “Ripple” | 16 |
| 12 PSF, 12V PSF | 15 |
| 12 PSF, 12V PSF | 13 |
| 14 PSF | 15 |
| 15 PSF | 16 |
| 16 PSF | 18 |
| 52, 52V | 15 |
| 52, 52V | 13 |
| 54 | 15 |
| 55 | 17 |
| 56 | 19 |
| 94 | 16 |
| Patrician (black only, uncommon) | 18 |
| Waterman Celluloid Pens | |
| Pen Model(s) | Sac Size |
| 3, 3V | 16 |
| 5 | 16 |
| 7 | 17 |
| 32, 32V | 16 |
| 52 | 16 |
| 92, 92V | 16 |
| 94 | 17 |
| Citation (Taperite or open nib) | 16 |
| Commando (ladies’) | 14 |
| Commando (men’s) | 16 |
| Crusader (Taperite or open nib) | 16 |
| Dauntless (Taperite or open nib) | 16 |
| Emblem Pen Standard | 15 |
| Emblem Pen De Luxe (oversize) | 18 |
| Hundred Year Pen Standard | 15 |
| Hundred Year Pen De Luxe (oversize) | 18 |
| Ink-Vue (Type 1) | Ink-Vue (full size) |
| Ink-Vue (Type 2) | (See repair article) |
| Lady Patricia Ink-Vue | Ink-Vue (Lady Pat) |
| Lady Patricia lever filler | 14 |
| Medalist (Taperite or open nib) | 16 |
| Patrician | 18 |
| Stalwart | 16 |
| Stateleigh (Taperite or open nib) | 16 |
A correct Pli-Glass sac is not available for the Demi. A No 14 vinyl sac (often sold as “silicone”) will fit when cut to 2" long; there are also some vinyl sacs available that resemble the original “51” sac but are too small for a full-size “51” — these sacs will work well in a Demi.
The correct Pli-Glass sac, as noted in the table, is available from Indy-Pen-Dance and Vintagepens.com. These sacs are the exact same material, size, and shape as the originals that Parker used.
The correct size sac for the Touchdown TM, as noted in the table, is 15×2 Necked. At the time of this writing, this sac was not available from any known source. Substitute a No 15 straight sac cut to a length of 2".
The information in this article is as accurate as possible, but you should not take it as absolutely authoritative or complete. If you have additions or corrections to this page, please consider sharing them with us to improve the accuracy of our information.
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