190 1-800-452-1261
Stopcock Grease
Silicone lubricant with high film strength. Ideal for lubricating stopcocks or sealing
desiccators and vacuum chambers. 5-ounce tube.
Catalog No. Description Price/Each
AP1095 Stopcock Grease, Silicone $44.93
Stoppers, Rubber
Rubber Stoppers
Stopper
Hole Size
No.
Stoppers
Per Pound Size
Catalog No.
Solid
Price Per
Pound
Catalog No.
One-Hole
Price Per
Pound
Catalog No.
Two-Hole
Price Per
Pound
3 mm 90 00 AP2219 $15.86 AP2220 $15.34 AP2221 $15.34
3 mm 63 0 AP2222 15.86 AP2300 15.86 AP2310 15.34
4 mm 52 1 AP2223 15.86 AP2301 15.86 AP2311 15.34
5 mm 45 2 AP2224 15.86 AP2302 15.86 AP2312 15.34
5 mm 33 3 AP2225 15.34 AP2303 15.34 AP2313 15.86
5 mm 28 4 AP2226 15.86 AP2304 15.86 AP2314 15.34
5 mm 24 5 AP2227 15.86 AP2305 15.86 AP2315 15.86
5 mm 21 51/2 AP2231 15.37 AP2237 15.37 AP2243 14.87
5 mm 18 6 AP2228 15.86 AP2306 15.34 AP2316 15.86
5 mm 16 61/2 AP2232 15.37 AP2238 15.37 AP2244 15.37
5 mm 13 7 AP2229 15.86 AP2307 15.86 AP2317 15.86
5 mm 10 8 AP2230 15.86 AP2308 15.34 AP2318 15.34
5 mm 9 9 AP2233 15.34 AP2239 15.34 AP2245 14.87
5 mm 7 10 AP2234 15.34 AP2240 15.34 AP2246 15.34
5 mm 7 101/2 AP2235 15.37 AP2241 15.44 AP2247 14.87
5 mm 6 11 AP2236 14.87 AP2242 15.69 AP2248 15.18
Rubber Stoppers, Assortments
Each one-pound bag has a mix of the most popular whole-number sizes of black
stoppers. Choose from all solid, all one-hole, all two-hole, or a combination of solid,
one-hole and two-hole (AP2320).
Catalog No. Description Sizes Price/Lb
AP2320 Rubber Stoppers, Assorted 1 to 6 $17.52
AP6229 Rubber Stoppers, Solid 00 to 7 18.76
AP6230 Rubber Stoppers, One-Hole 00 to 7 16.98
AP6231 Rubber Stoppers, Two-Hole 2 to 8 17.68
Rubber Stoppers
Rubber Stopper Sizing Table*
Stopper
Size
Bottom Diameter
(mm)
Top Diameter
(mm)
Fits Opening i.d.
(mm)
00 10 14 11–13
0 13 17 13–15
1 14 18 14–16
2 15 19 15–17
3 18 23 18–21
4 20 25 20–23
5 23 27 23–25
51/2 25 29 25–27
6 26 32 26–30
6 1/2 27 34 27–32
7 30 37 30–35
8 33 41 33–39
9 38 45 38–43
10 43 50 43–48
101/2 45 53 45–51
11 48 56 48–54
* Rubber stoppers and corks are sized dif ferently. This table is for sizing rubber stoppers
only. To size corks, see page 131.
AP2219, etc.
Stoppers, Rubber, Accessories
Glass-a-Matic Hand Saver
This easy-to-use tool helps prevent injury to hands. Simply push the tool through
the stopper with a twist, remove the nose cone, insert the glass tube, and remove
the stopper from the tool. The glass tubing remains in the stopper. Also useful for
removing glass tubing from stoppers. Rubber stopper and glass tubing not included.
See free video at flinnsci.com.
Catalog No. Description Price/Each
AP4599 Glass-a-Matic Hand Saver $23.86
Stopper/Cork Organizer See page 205.
Stopper Sizer
Provides size information in stopper ranges 00 to 12 and cork sizes 0 to 26. The opposite
side of the sizer has a circular scale for sizing tubing diameters between 4 mm
and 52 mm. Sizer is made of durable plastic.
Catalog No. Description Price/Each
AP2251 Stopper Sizer $16.61
Stopper Sizer
AP2251
Glass-a-Matic Hand Saver
AP4599
FREE HOW TO SELECT
STOPPERS VIDEO AT
FLINNSCI.COM
Safer Method for Inserting Glass
Tubing into Rubber Stoppers
A safe and convenient way for inserting glass tubing and thermometers into
rubber stoppers is to insert a cork borer (AP8848) that just fits over the item to
be inserted into the rubber stopper. Thread the tubing or thermometer through
the cork borer, and then remove the cork borer. To remove thermometers or
tubing from rubber stoppers, just reverse the process.
Stoppers, Glass See page 317.
Stopcock Grease, Silicone
AP1095
Stopwatches See pages 198–199.
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