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UNITED SCIENTIFIC SUPPLIES Black Rubber Stopper, Size 12, 2 Holes, RST12-H2 - Rubber Stoppers

UNITED SCIENTIFIC SUPPLIES Black Rubber Stopper, Size 12, 2 Holes, RST12-H2

The UNITED SCIENTIFIC SUPPLIES INC Stopper: Rubber is a black rubber stopper with a Stopper Size of 12, featuring a 54 mm bottom diameter, 64 mm top diameter, and 25 mm overall height. It includes 2 holes and is…

SKU 3G-OTH-381370

Also listed as: RST12H2 · RST12 H2

Brand
UNITED SCIENTIFIC SUPPLIES
Item
Black Rubber Stopper, Size 12, 2 Holes, RST12-H2
Category
Rubber Stoppers
Available to Order
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Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

UNITED SCIENTIFIC SUPPLIES
Manufacturer Part Number
RST12-H2
Type
Black
Material
Rubber
Color
Black
Holes
2
Top Dia
64 mm
Bottom Dia
54 mm
Overall Ht
25 mm
Stopper Size
12

Technical Documents

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UNITED SCIENTIFIC SUPPLIES Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The UNITED SCIENTIFIC SUPPLIES INC Stopper: Rubber is a black rubber stopper with a Stopper Size of 12, featuring a 54 mm bottom diameter, 64 mm top diameter, and 25 mm overall height. It includes 2 holes and is identified by manufacturer part number RST12-H2.

Frequently Asked Questions

What is the UNITED SCIENTIFIC SUPPLIES rubber stopper RST12-H2 used for?

This black rubber stopper (Stopper Size 12) with 2 holes is used to seal laboratory flasks, test tubes, and other glassware. It accommodates tubing or probes through the holes for gas transfer, filtration, or sensor insertion in chemistry, biology, and industrial labs.

What are the specifications of the UNITED SCIENTIFIC SUPPLIES rubber stopper RST12-H2?

The stopper is made of black rubber, Stopper Size 12, with a 54 mm bottom diameter, 64 mm top diameter, and 25 mm overall height. It has 2 holes and is manufactured by UNITED SCIENTIFIC SUPPLIES INC under MPN RST12-H2.

Where to buy the UNITED SCIENTIFIC SUPPLIES rubber stopper RST12-H2 worldwide?

3G Electric supplies the UNITED SCIENTIFIC SUPPLIES rubber stopper RST12-H2 worldwide. As a global industrial equipment distributor, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time.

How to select the correct rubber stopper size for a flask?

Measure the inner diameter of your flask neck. The stopper size (e.g., Size 12) corresponds to a standard taper or nominal dimension. For the RST12-H2, verify the 54 mm bottom diameter fits your opening. Always match the stopper material (rubber) to your chemical compatibility needs.

UNITED SCIENTIFIC SUPPLIES Products

3G Electric supplies UNITED SCIENTIFIC SUPPLIES rubber stoppers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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Compatible alternatives & equivalents

Cross-referenced by specification & description
Stopper: Rubber, 13 Stopper Size, 58 mm Bottom Dia, 68 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST13-H2)
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Stopper: Rubber, 13 Stopper Size, 58 mm Bottom Dia, 68 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST13-H2)
Stopper: Rubber, 15 Stopper Size, 83 mm Bottom Dia, 103 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST15-H2)
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Stopper: Rubber, 15 Stopper Size, 83 mm Bottom Dia, 103 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST15-H2)
Stopper: Rubber, 11 1/2 Stopper Size, 50 mm Bottom Dia, 63 mm Top Dia, 25 mm Overall Ht, Black (MPN RST11A-H2)
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Stopper: Rubber, 11 1/2 Stopper Size, 50 mm Bottom Dia, 63 mm Top Dia, 25 mm Overall Ht, Black (MPN RST11A-H2)
Stopper: Rubber, 14 Stopper Size, 75 mm Bottom Dia, 90 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST14-H2)
UNITED SCIENTIFIC SUPPLIES
Stopper: Rubber, 14 Stopper Size, 75 mm Bottom Dia, 90 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST14-H2)
Stopper: Rubber, 11 Stopper Size, 48 mm Bottom Dia, 56 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST11-H2)
UNITED SCIENTIFIC SUPPLIES
Stopper: Rubber, 11 Stopper Size, 48 mm Bottom Dia, 56 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST11-H2)
Stopper: Rubber, 10 Stopper Size, 45 mm Bottom Dia, 53 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST10A-H2)
UNITED SCIENTIFIC SUPPLIES
Stopper: Rubber, 10 Stopper Size, 45 mm Bottom Dia, 53 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST10A-H2)

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