Cap-Design Outer Joint Stopper For 14/20 Inner Joint 6Pcs

Special Price $4.50 Regular Price $25.55
  • Cap-design Hollow Glass Stopper With Standard Taper Female Joint
  • Made of borosilicate glass 3.3 by hand-blowing,heavy wall design,High Quality
  • The interchangable glass oint was grounded both by machine and hand to make a good seal
  • Can be used with glass flask with 14/20 or 14/35 male joint.


$15 for below USD 300. Free shipping up to USD 300


30 Days Money Back


Accept credit or debit card and PayPal payments securely.


Our prices and quality are unbeatable. And we'll prove it
Glass stopper,cap design,ground interchangeable taper outer joint,used to fit 14/20 gound inner joint.The frosted, precision-ground glass surfaces make a good seal when properly greased .
The female joint has a taper, it can fit any glassware with male joint which has the same taper and same outside diameter as long as the apparatus to which they are attached does not interfere. For example, a joint stopper with 14/20 female joint will fit into a 14/35 flask.
This cap design stopper is made of high quality borosilicate glass 3.3 by hand-blowing,the glass tubings we used for hand-blowing are heavy wall design.