Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

UNITED SCIENTIFIC SUPPLIES Stopper: Neoprene, 10 1/2 Stopper Size, 45 mm Bottom Dia, 53 mm Top Dia - Rubber Stoppers

UNITED SCIENTIFIC SUPPLIES Stopper: Neoprene, 10 1/2 Stopper Size, 45 mm Bottom Dia, 53 mm Top Dia

The UNITED SCIENTIFIC SUPPLIES Stopper: Neoprene is a rubber stopper made from green neoprene. It has a stopper size of 10-1/2, with a bottom diameter of 45 mm, a top diameter of 53 mm, and an overall height of 25 mm.

SKU 3G-OTH-381393

Also listed as: NST10AS · NST10A S

Brand
UNITED SCIENTIFIC SUPPLIES
Item
Stopper: Neoprene, 10 1/2 Stopper Size, 45 mm Bottom Dia, 53 mm Top Dia
Category
Rubber Stoppers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

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
NST10A-S
Type
Green
Material
Neoprene
Color
Green
Top Dia
53 mm
Bottom Dia
45 mm
Overall Ht
25 mm
Stopper Size
10-1/2

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

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

Product Description

The UNITED SCIENTIFIC SUPPLIES Stopper: Neoprene is a rubber stopper made from green neoprene. It has a stopper size of 10-1/2, with a bottom diameter of 45 mm, a top diameter of 53 mm, and an overall height of 25 mm.

Frequently Asked Questions

What is a UNITED SCIENTIFIC SUPPLIES neoprene stopper used for?

This green neoprene stopper (size 10-1/2) seals laboratory flasks, test tubes, and other glassware to prevent leaks or contamination. It is commonly used in chemical, pharmaceutical, and educational labs for secure, reusable closures during mixing, storage, or transport.

What are the specifications of the UNITED SCIENTIFIC SUPPLIES stopper NST10A-S?

The stopper is made of green neoprene, size 10-1/2, with a bottom diameter of 45 mm, top diameter of 53 mm, and overall height of 25 mm. It is manufactured by UNITED SCIENTIFIC SUPPLIES INC under part number NST10A-S.

Where to buy a UNITED SCIENTIFIC SUPPLIES neoprene stopper worldwide?

3G Electric supplies the UNITED SCIENTIFIC SUPPLIES neoprene stopper NST10A-S to customers worldwide. We handle full logistics, customs clearance, and delivery, ensuring you receive the correct part for your lab or industrial application.

How to select the right neoprene stopper size for a flask?

Measure the inner diameter of your flask neck and match it to the stopper's bottom diameter (45 mm for this size 10-1/2). Neoprene offers good chemical resistance and flexibility. For a secure fit, the stopper should compress slightly when inserted.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Compatible alternatives & equivalents

Cross-referenced by specification & description
Green neoprene rubber stopper, size 10, with a top diameter of 50 mm, bottom diameter of 42 mm, and overall height of 25 mm. Used to seal laboratory glassware such as flasks, test tubes, and bottles, providing a flexible and chemical-resistant closure for mixing, storing, or transporting samples
UNITED SCIENTIFIC SUPPLIES
Green neoprene rubber stopper, size 10, with a top diameter of 50 mm, bottom diameter of 42 mm, and overall height of 25 mm. Used to seal laboratory glassware such as flasks, test tubes, and bottles, providing a flexible and chemical-resistant closure for mixing, storing, or transporting samples
Green neoprene stopper with 6-1/2 stopper size, 27 mm bottom diameter, 34 mm top diameter, and 25 mm overall height. Used to seal laboratory glassware such as flasks, test tubes, and bottles, providing a chemical-resistant closure
UNITED SCIENTIFIC SUPPLIES
Green neoprene stopper with 6-1/2 stopper size, 27 mm bottom diameter, 34 mm top diameter, and 25 mm overall height. Used to seal laboratory glassware such as flasks, test tubes, and bottles, providing a chemical-resistant closure
Green neoprene rubber stopper, size 11-1/2, with a top diameter of 63 mm, bottom diameter of 50 mm, and overall height of 25 mm. Used to seal laboratory flasks, test tubes, and other glassware, providing a tight closure for mixing, shaking, or storing samples
UNITED SCIENTIFIC SUPPLIES
Green neoprene rubber stopper, size 11-1/2, with a top diameter of 63 mm, bottom diameter of 50 mm, and overall height of 25 mm. Used to seal laboratory flasks, test tubes, and other glassware, providing a tight closure for mixing, shaking, or storing samples
This green neoprene stopper, size 9, has a top diameter of 45 mm, bottom diameter of 37 mm, and overall height of 25 mm. It is solid with no holes, suitable for sealing laboratory flasks, test tubes, and other glassware
UNITED SCIENTIFIC SUPPLIES
This green neoprene stopper, size 9, has a top diameter of 45 mm, bottom diameter of 37 mm, and overall height of 25 mm. It is solid with no holes, suitable for sealing laboratory flasks, test tubes, and other glassware
Stopper: Neoprene, 5 Stopper Size, 23 mm Bottom Dia, 27 mm Top Dia, 25 mm Overall Ht, Green, 0 Holes (MPN NST5-S)
UNITED SCIENTIFIC SUPPLIES
Stopper: Neoprene, 5 Stopper Size, 23 mm Bottom Dia, 27 mm Top Dia, 25 mm Overall Ht, Green, 0 Holes (MPN NST5-S)
Green neoprene rubber stopper, size 00, with 10 mm bottom diameter, 15 mm top diameter, and 25 mm overall height. Used to seal laboratory glassware such as flasks and test tubes, providing a tight closure for general lab applications
UNITED SCIENTIFIC SUPPLIES
Green neoprene rubber stopper, size 00, with 10 mm bottom diameter, 15 mm top diameter, and 25 mm overall height. Used to seal laboratory glassware such as flasks and test tubes, providing a tight closure for general lab applications

More from UNITED SCIENTIFIC SUPPLIES

View all UNITED SCIENTIFIC SUPPLIES parts
Black rubber stopper, size 9, with 45 mm top diameter, 37 mm bottom diameter, and 25 mm overall height. Features 2 holes for inserting tubing or probes. Used to seal laboratory flasks, test tubes, or bottles in general lab applications
UNITED SCIENTIFIC SUPPLIES
Black rubber stopper, size 9, with 45 mm top diameter, 37 mm bottom diameter, and 25 mm overall height. Features 2 holes for inserting tubing or probes. Used to seal laboratory flasks, test tubes, or bottles in general lab applications
Black rubber stopper, Size 4, with 20 mm bottom diameter, 26 mm top diameter, and 25 mm overall height. Features 2 holes for inserting tubing or probes. Used to seal laboratory flasks, test tubes, and glassware in general lab applications
UNITED SCIENTIFIC SUPPLIES
Black rubber stopper, Size 4, with 20 mm bottom diameter, 26 mm top diameter, and 25 mm overall height. Features 2 holes for inserting tubing or probes. Used to seal laboratory flasks, test tubes, and glassware in general lab applications
Black rubber stopper, size 10, with 2 holes. Top diameter 53 mm, bottom diameter 45 mm, overall height 25 mm. Used to seal laboratory flasks, test tubes, and glassware, preventing contamination and gas leakage. The two holes allow insertion of tubing or thermometers for controlled setups
UNITED SCIENTIFIC SUPPLIES
Black rubber stopper, size 10, with 2 holes. Top diameter 53 mm, bottom diameter 45 mm, overall height 25 mm. Used to seal laboratory flasks, test tubes, and glassware, preventing contamination and gas leakage. The two holes allow insertion of tubing or thermometers for controlled setups
Black rubber stopper, size 10-1/2, with a top diameter of 50 mm, bottom diameter of 42 mm, and overall height of 25 mm. Used to seal laboratory glassware such as flasks, test tubes, and bottles to prevent leaks and contamination during mixing, storage, or transport of chemicals and samples
UNITED SCIENTIFIC SUPPLIES
Black rubber stopper, size 10-1/2, with a top diameter of 50 mm, bottom diameter of 42 mm, and overall height of 25 mm. Used to seal laboratory glassware such as flasks, test tubes, and bottles to prevent leaks and contamination during mixing, storage, or transport of chemicals and samples
This solid neoprene stopper, size 3, is used to seal laboratory glassware such as flasks, test tubes, and bottles. It features a top diameter of 24 mm, bottom diameter of 18 mm, and overall height of 25 mm. The green neoprene material provides resistance to oils, solvents, and moderate temperatures for general lab applications
UNITED SCIENTIFIC SUPPLIES
This solid neoprene stopper, size 3, is used to seal laboratory glassware such as flasks, test tubes, and bottles. It features a top diameter of 24 mm, bottom diameter of 18 mm, and overall height of 25 mm. The green neoprene material provides resistance to oils, solvents, and moderate temperatures for general lab applications
Green neoprene rubber stopper, size 13, with a top diameter of 68 mm, bottom diameter of 58 mm, and overall height of 25 mm. Used to seal laboratory flasks, test tubes, and other glassware for mixing, storing, or transporting samples
UNITED SCIENTIFIC SUPPLIES
Green neoprene rubber stopper, size 13, with a top diameter of 68 mm, bottom diameter of 58 mm, and overall height of 25 mm. Used to seal laboratory flasks, test tubes, and other glassware for mixing, storing, or transporting samples
Black rubber stopper, size 5, with a top diameter of 27 mm, bottom diameter of 23 mm, and overall height of 25 mm. Features two holes for inserting tubing or probes. Used to seal laboratory flasks, test tubes, and glassware in general lab applications
UNITED SCIENTIFIC SUPPLIES
Black rubber stopper, size 5, with a top diameter of 27 mm, bottom diameter of 23 mm, and overall height of 25 mm. Features two holes for inserting tubing or probes. Used to seal laboratory flasks, test tubes, and glassware in general lab applications
Black rubber stopper, size 11-1/2, with top diameter 63 mm, bottom diameter 50 mm, and overall height 25 mm. Used for sealing laboratory containers such as flasks, test tubes, and bottles to prevent contamination, evaporation, or spillage
UNITED SCIENTIFIC SUPPLIES
Black rubber stopper, size 11-1/2, with top diameter 63 mm, bottom diameter 50 mm, and overall height 25 mm. Used for sealing laboratory containers such as flasks, test tubes, and bottles to prevent contamination, evaporation, or spillage