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WHEATON Stopper: Silicone, 20 Stopper Size, 13.1 mm Bottom Dia, 20 mm Top Dia, 8.38 mm Overall Ht - Synthetic Rubber Stoppers
WHEATONSynthetic Rubber Stoppers

WHEATON Stopper: Silicone, 20 Stopper Size, 13.1 mm Bottom Dia, 20 mm Top Dia, 8.38 mm Overall Ht

The WHEATON Stopper: Silicone is a synthetic rubber stopper with a 20 stopper size, featuring a 13.1 mm bottom diameter, 20 mm top diameter, and 8.38 mm overall height. Made from colorless silicone, it complies with…

SKU 3G-OTH-382717

Also listed as: 224100178 · 224100 178

Brand
WHEATON
Item
Stopper: Silicone, 20 Stopper Size, 13.1 mm Bottom Dia, 20 mm Top Dia, 8.38 mm Overall Ht
Category
Synthetic Rubber Stoppers
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Local availability & support

Delivery
Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
Payment
Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.

Technical Specifications

WHEATON
Manufacturer Part Number
224100-178
Type
Colorless
Material
Silicone
Color
Colorless
Top Dia
20 mm
Standards
EP 3.2.1
Bottom Dia
13.1 mm
Overall Ht
8.38 mm
Stopper Size
20

Technical Documents

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WHEATON Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The WHEATON Stopper: Silicone is a synthetic rubber stopper with a 20 stopper size, featuring a 13.1 mm bottom diameter, 20 mm top diameter, and 8.38 mm overall height. Made from colorless silicone, it complies with EP 3.2.1 standards.

Frequently Asked Questions

What is the WHEATON silicone stopper used for?

The WHEATON silicone stopper is used to seal laboratory containers such as flasks and test tubes. It provides a secure, inert closure for applications requiring chemical resistance and temperature stability. Common in pharmaceutical, biotech, and research labs, it meets EP 3.2.1 standards for rubber closures.

What are the specifications of the WHEATON stopper 224100-178?

The WHEATON stopper 224100-178 has a 20 stopper size, 13.1 mm bottom diameter, 20 mm top diameter, and 8.38 mm overall height. It is made of colorless silicone and complies with EP 3.2.1 standards. The material is silicone, offering flexibility and chemical inertness for laboratory use.

Where to buy WHEATON stoppers in worldwide?

You can source WHEATON stoppers through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to worldwide destinations. Contact us for availability and lead times. 3G Electric supplies genuine WHEATON components for laboratory applications.

How to select the correct WHEATON stopper size?

To select the correct WHEATON stopper, match the stopper size number to your container's neck opening. The 20 stopper size fits standard laboratory glassware. Measure the top and bottom diameters: this model has 20 mm top and 13.1 mm bottom diameters. Ensure the silicone material is compatible with your chemicals and temperature range.

Used in

Common applications for WHEATON
Environmental testing laboratories — WHEATON BOD bottles (SKU 48H604) for biochemical oxygen demand analysis of water samples.
Pharmaceutical compounding — WHEATON rectangular glass lab bottles (SKU 48H782) for storing liquid reagents and intermediates.
Cryogenic sample storage — WHEATON fiberboard cold storage boxes (SKU 6EMW3) for organizing vials in liquid nitrogen freezers.
Analytical chemistry — WHEATON glass scintillation vials (SKU 48H848) for liquid scintillation counting of radioactive samples.
Industrial quality control — WHEATON bottle top dispensers (SKU 23NC18) for dispensing precise volumes of solvents or acids.
Laboratory organization — WHEATON paper index cards (SKU 49WE10) for labeling and tracking samples in storage racks.

WHEATON Products

3G Electric supplies WHEATON synthetic 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: Bromobutyl, 20 Stopper Size, 13.3 mm Bottom Dia, 18.8 mm Top Dia, 8 mm Overall Ht, Gray (MPN W988006-S)
WHEATON
Stopper: Bromobutyl, 20 Stopper Size, 13.3 mm Bottom Dia, 18.8 mm Top Dia, 8 mm Overall Ht, Gray (MPN W988006-S)
Stopper: Bromobutyl, 13 Stopper Size, 7.82 mm Bottom Dia, 12.7 mm Top Dia, 6.25 mm Overall Ht, Gray (MPN W988004-S)
WHEATON
Stopper: Bromobutyl, 13 Stopper Size, 7.82 mm Bottom Dia, 12.7 mm Top Dia, 6.25 mm Overall Ht, Gray (MPN W988004-S)
Stopper: Bromobutyl, 13 Stopper Size, 7.6 mm Bottom Dia, 12.5 mm Top Dia, 8.9 mm Overall Ht, Gray (MPN W988005-S)
WHEATON
Stopper: Bromobutyl, 13 Stopper Size, 7.6 mm Bottom Dia, 12.5 mm Top Dia, 8.9 mm Overall Ht, Gray (MPN W988005-S)
Stopper: Rubber, 3 Stopper Size, 18 mm Bottom Dia, 24 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST3-H2)
UNITED SCIENTIFIC SUPPLIES
Stopper: Rubber, 3 Stopper Size, 18 mm Bottom Dia, 24 mm Top Dia, 25 mm Overall Ht, Black, 2 Holes (MPN RST3-H2)
Stopper: Silicone, 0 Stopper Size, 13 mm Bottom Dia, 17 mm Top Dia, 25 mm Overall Ht, Blue, 0 Holes (MPN UNSST0)
UNITED SCIENTIFIC SUPPLIES
Stopper: Silicone, 0 Stopper Size, 13 mm Bottom Dia, 17 mm Top Dia, 25 mm Overall Ht, Blue, 0 Holes (MPN UNSST0)
Stopper: Silicone, 6 1/2 Stopper Size, 27 mm Bottom Dia, 34 mm Top Dia, 25 mm Overall Ht, Blue (MPN UNSST6A)
UNITED SCIENTIFIC SUPPLIES
Stopper: Silicone, 6 1/2 Stopper Size, 27 mm Bottom Dia, 34 mm Top Dia, 25 mm Overall Ht, Blue (MPN UNSST6A)

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Stopper: Bromobutyl, 13 Stopper Size, 7.9 mm Bottom Dia, 13 mm Top Dia, 6.3 mm Overall Ht, Gray (MPN W224100-420)
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Stopper: Bromobutyl, 13 Stopper Size, 7.9 mm Bottom Dia, 13 mm Top Dia, 6.3 mm Overall Ht, Gray (MPN W224100-420)
Stopper: Bromobutyl, 20 Stopper Size, 13.2 mm Bottom Dia, 20 mm Top Dia, 14.2 mm Overall Ht, Gray (MPN W224100-407)
WHEATON
Stopper: Bromobutyl, 20 Stopper Size, 13.2 mm Bottom Dia, 20 mm Top Dia, 14.2 mm Overall Ht, Gray (MPN W224100-407)
Stopper: Bromobutyl, 20 Stopper Size, 13.4 mm Bottom Dia, 18.8 mm Top Dia, 11.8 mm Overall Ht, Gray (MPN W224100-408)
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Stopper: Bromobutyl, 20 Stopper Size, 13.4 mm Bottom Dia, 18.8 mm Top Dia, 11.8 mm Overall Ht, Gray (MPN W224100-408)
Stopper: Silicone, 20 Stopper Size, 13.1 mm Bottom Dia, 20 mm Top Dia, 8.38 mm Overall Ht, Colorless (MPN 224100-178)
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Stopper: Silicone, 20 Stopper Size, 13.1 mm Bottom Dia, 20 mm Top Dia, 8.38 mm Overall Ht, Colorless (MPN 224100-178)
Stopper: Bromobutyl, 20 Stopper Size, 13.4 mm Bottom Dia, 18.75 mm Top Dia, 13.3 mm Overall Ht, Gray (MPN W224100-406)
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Stopper: Bromobutyl, 20 Stopper Size, 13.4 mm Bottom Dia, 18.75 mm Top Dia, 13.3 mm Overall Ht, Gray (MPN W224100-406)
Stopper: Bromobutyl, 20 Stopper Size, Gray, 0 Holes, 125 Stoppers Included (MPN W988007-S)
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Stopper: Bromobutyl, 20 Stopper Size, Gray, 0 Holes, 125 Stoppers Included (MPN W988007-S)
Stopper: Bromobutyl, 13 Stopper Size, 7.6 mm Bottom Dia, 12.9 mm Top Dia, 6.25 mm Overall Ht, Gray (MPN W988003-S)
WHEATON
Stopper: Bromobutyl, 13 Stopper Size, 7.6 mm Bottom Dia, 12.9 mm Top Dia, 6.25 mm Overall Ht, Gray (MPN W988003-S)
Stopper: Bromobutyl, 20 Stopper Size, 13.27 mm Bottom Dia, 19 mm Top Dia, 11.8 mm Overall Ht, Gray (MPN W988008-S)
WHEATON
Stopper: Bromobutyl, 20 Stopper Size, 13.27 mm Bottom Dia, 19 mm Top Dia, 11.8 mm Overall Ht, Gray (MPN W988008-S)