Questions? Talk to a Product Expert

Get help from our in-house testing equipment specialists.

Open M–F: 8:00am–5:00pm

Call Us: (800) 444-1508

No.1 Vacuum Flask Stopper

Model: GWA-501

$5.00

Ship to

Shipping Method

Name

Estimated Delivery

Price

No shipping options

No.1 Vacuum Flask Stopper

Model: GWA-501

$5.00

No.2 Vacuum Flask Stopper

Model: GWA-502

$6.60

SKU: GWA-502

Ship to

Shipping Method

Name

Estimated Delivery

Price

No shipping options

No.4 Vacuum Flask Stopper

Model: GWA-504

$10.00

SKU: GWA-504

Ship to

Shipping Method

Name

Estimated Delivery

Price

No shipping options

Questions? Talk to a Product Expert

Get help from our in-house testing equipment specialists.

Open M–F: 8:00am–5:00pm

Call Us: (800) 444-1508

Description
Specifications
Quick Compare
Q&A

Vacuum Flask Stoppers are used for deairing operations. These stoppers will fit pycnometer flasks like Volumetric Flasks or the No.4 stopper will also fit Iodine Flasks. All stoppers have single holes with barbed fittings for connection to 3/8in vacuum tubing.

GWA-501 No.1 Stopper will fit 250ml Volumetric Flasks

GWA-502 No.2 Stopper will fit 500ml Volumetric Flasks

GWA-503 No.4 Stopper will fit 1,000ml Volumetric Flasks and all Iodine Flasks

Features:

Forms a leak-proof seal for efficient deairing
Metal barbed fitting for quick connection of vacuum tubing

Included Items:

Vacuum Flask Stopper (No.1, No.2, or No.4)

Product tags

AASHTO T 100 (10)
,
ASTM D854 (7)

Specifications

Attribute name	Attribute value
Estimated Shipping Weight	0.5lb (0.23kg)

Quick Compare

Features	No.1 Vacuum Flask Stopper	No.2 Vacuum Flask Stopper	No.4 Vacuum Flask Stopper
Pricing	$5.00	$6.60	$10.00
Size	No.1	No.2	No.4
Estimated Shipping Weight	0.5lb (0.23kg)	0.5lb (0.23kg)	0.5lb (0.23kg)

Product Q&A

Displaying Q&A 1-4 of 8

Q: Will this work with fan-forced heaters?

I'm very satisfied with this product. It was exactly what I wanted in my travel trailer, for a lot more accurate heating. Now I can pinpoint it to exactly the temperature I want, instead of guessing, sliding the conventional thermostat back and forth. Will for sure save on propane too! Nice back light when adjusting the temperature, making it easy to see even at night.