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UNITED SCIENTIFIC SUPPLIES Stopper: Rubber, 2 Stopper Size, 16 mm Bottom Dia, 20 mm Top Dia, 25 mm Overall Ht - Rubber Stoppers

UNITED SCIENTIFIC SUPPLIES Stopper: Rubber, 2 Stopper Size, 16 mm Bottom Dia, 20 mm Top Dia, 25 mm Overall Ht

The UNITED SCIENTIFIC SUPPLIES Stopper: Rubber is a black rubber stopper with a Stopper Size of 2, featuring two holes. It has a bottom diameter of 16 mm, a top diameter of 20 mm, and an overall height of 25 mm. This…

SKU 3G-OTH-381320

Also listed as: RST2H2 · RST2 H2

Brand
UNITED SCIENTIFIC SUPPLIES
Item
Stopper: Rubber, 2 Stopper Size, 16 mm Bottom Dia, 20 mm Top Dia, 25 mm Overall Ht
Category
Rubber Stoppers
Available to Order
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Worldwide Shipping
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Technical specs
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Local availability & support — the Philippines

Delivery
5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
Payment
Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
Ships to
Manila, Quezon City, Cebu, Davao, Batangas

Technical Specifications

UNITED SCIENTIFIC SUPPLIES
Manufacturer Part Number
RST2-H2
Type
Black
Material
Rubber
Color
Black
Holes
2
Top Dia
20 mm
Bottom Dia
16 mm
Overall Ht
25 mm
Stopper Size
2

Technical Documents

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

Product Description

The UNITED SCIENTIFIC SUPPLIES Stopper: Rubber is a black rubber stopper with a Stopper Size of 2, featuring two holes. It has a bottom diameter of 16 mm, a top diameter of 20 mm, and an overall height of 25 mm. This product is identified by manufacturer part number RST2-H2.

Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.

Frequently Asked Questions

What is a UNITED SCIENTIFIC SUPPLIES rubber stopper used for?

This black rubber stopper with two holes is used to seal laboratory flasks, test tubes, or bottles while allowing insertion of glass tubing, thermometers, or probes. It is common in chemistry, biology, and industrial labs for creating airtight or vented connections.

What are the specifications of the UNITED SCIENTIFIC SUPPLIES rubber stopper RST2-H2?

The stopper has a Stopper Size of 2, a bottom diameter of 16 mm, a top diameter of 20 mm, and an overall height of 25 mm. It is made of black rubber with two holes. The manufacturer part number is RST2-H2 from UNITED SCIENTIFIC SUPPLIES INC.

Where to buy UNITED SCIENTIFIC SUPPLIES rubber stoppers worldwide?

3G Electric supplies UNITED SCIENTIFIC SUPPLIES rubber stoppers worldwide. As a global industrial equipment distributor since 1990, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on the RST2-H2 stopper.

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

Measure the inner diameter of your flask neck. The stopper's top diameter (20 mm) should be slightly larger than the neck opening, and the bottom diameter (16 mm) should fit snugly inside. For two-hole stoppers like this RST2-H2, ensure your tubing or probes match the hole size.

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, 0 Stopper Size, 13 mm Bottom Dia, 17 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST0-H2)
UNITED SCIENTIFIC SUPPLIES
Stopper: Rubber, 0 Stopper Size, 13 mm Bottom Dia, 17 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST0-H2)
Stopper: Rubber, 4 Stopper Size, 20 mm Bottom Dia, 26 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST4-H2)
UNITED SCIENTIFIC SUPPLIES
Stopper: Rubber, 4 Stopper Size, 20 mm Bottom Dia, 26 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST4-H2)
Stopper: Rubber, 00 Stopper Size, 10 mm Bottom Dia, 15 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST00-H2)
UNITED SCIENTIFIC SUPPLIES
Stopper: Rubber, 00 Stopper Size, 10 mm Bottom Dia, 15 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST00-H2)
Stopper: Rubber, 15 Stopper Size, 83 mm Bottom Dia, 103 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST15-H2)
UNITED SCIENTIFIC SUPPLIES
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, 16 Stopper Size, 90 mm Bottom Dia, 127 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST16-H2)
UNITED SCIENTIFIC SUPPLIES
Stopper: Rubber, 16 Stopper Size, 90 mm Bottom Dia, 127 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST16-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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