Skip to product information
1 of 3

stonylab

Glass Penny Head Glass Hollow Stopper, 5 Pack

Glass Penny Head Glass Hollow Stopper, 5 Pack

SKU:

Regular price $26.99 USD
Regular price Sale price $26.99 USD
Sale Sold out
Shipping calculated at checkout.
Joint Size
Buy on Amazon

Processing: 1-3 business days. Shipping: 3-7 business days.

  • 24/40 Joint; 14/20 Joint; 19/22 Joint

  • 5 packs

  • Penny-Head stopper

  • Hollow glass stopper

  • Borosilicate Glass, Heavy Duty Design, Reusable & High quality

Contact Us

support@stonylab.com

100% Satisfaction! Please feel free to contact us anytime. All your questions will be answered within timely manner.

Shipping Worldwide

Yes, StonyLab offers delivery service to customers worldwide! Free standard shipping on labware orders in the US.

2-Year Comprehensive Warranty

Rest easy knowing that all web registered members receive a 2-Year Comprehensive Warranty on their purchases.

Price Adjustment

Buy with confidence! Our 10-day Price Adjustment policy ensures you get the best deal.

Sign up now and enjoy 10% off your first order View full details

Questions & Answers

Have a Question?

Be the first to ask a question about this.

Ask a Question

Customer Reviews

Based on 4 reviews
75%
(3)
0%
(0)
0%
(0)
25%
(1)
0%
(0)
J
Jim Harris
Can't have enough of them!

These come in super handy, continually. Not just for flasks, either - I've had to stopper various female joints due to mishap, poor planning, or just to prevent leakage while switching flasks or between uses of an addition funnel without a stopcock.These stoppers are nice and durable and the penny head means that the diameter is no larger than the joint they fit, so they stay pretty well out of the way. Pretty sure i can use them with 29/*, too, which is nice.

A
Alex
Exactly as advertised

Perfect, had gotten the distillation kit a while back, these work good to close it off from atmosphere

C
COCO RODENT
Stonylab??

I ordered Stonylab glass stoppers, but they don't have the Stonylab logo on the penny head. I am wondering if these are just some cheap counterfeit stoppers. I like Stonylab glassware and expect to receive the OEM version not some knockoff.I don't know how to grade these other than they do look like glass stoppers.

f
fredrick crichton
Tapered Glass Stoppers--you never need them until you have to have them!

Finely made glass stoppers for the 24/40 taper, these are precision ground, symmetrical, and the glass is free of ripples or bubbles. And the price is right. Great for leaving a solution to rest for a few hours or overnight but not for more than a few days as the stoppers will eventually freeze.