To find out what size sac your pen requires, measure the diameter of the sac peg as shown below. Use this measurement to find the size of sac.
These sac's are made in the traditional way, by dipping the former into liquid latex.
Make your choice from any of the STRAIGHT & NECKED RANGES LISTED BELOW.
Please enter your 25 ASSORTED SAC requirements in the kit combination box.
The sizing of ink sac's is in units of 64th's of an inch. Therefore a size 16 is 16 / 64th's of an inch in diameter.
In this metric era its a little difficult to measure in that format.
The table below of sac sizes has been converted to the nearest metric mm equivalent.
Size 10 Fits a sac peg of 4.0 mm
Size 12 Fits a sac peg of 4.7 mm
Size 13 Fits a sac peg of 5.1 mm
Size 14 Fits a sac peg of 5.5 mm
Size 15 Fits a sac peg of 5.9 mm
Size 16 Fits a sac peg of 6.3 mm
Size 16 Fits a sac peg of 6.3 mm (Tapered Sac)
Size 17 Fits a sac peg of 6.7 mm
Size 18 Fits a sac peg of 7.1 mm
Size 19 Fits a sac peg of 7.5 mm
Size 20 Fits a sac peg of 7.9 mm
Size 22 Fits a sac peg of 8.7 mm
Size 14 x 2 1/2 inch Necked (Sheaffer Snorkel TM)
Size 15 x 2 1/4 inch necked (Sheaffer Touchdown TM)
Size 17 x 2 1/8 inch Necked (Sheaffer Pen For Men)
Size 19 x 2 ⅛ inch Necked
Size 21 x 2 inch Necked
Size 21 x 2 13/16 inch Necked
Size 21 x 3 ¼ inch Necked
Size 22.5 x 2 7/16 inch Necked
Size 23 x 2 ½ inch Necked
Size 23 x 3 ⅛ inch Necked
Size 24 x 2 ¾ inch Necked
Size 24 x 3 ¼ inch Necked
Parker "51" Aerometric Replacement Sac
If the size of the sac peg fall between two sizes choose the smaller size.