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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. It is made of colorless silicone and complies…

SKU 3G-OTH-382713

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
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

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. It is made of colorless silicone and complies with EP 3.2.1 standards.

Frequently Asked Questions

What is the WHEATON silicone stopper used for?

The WHEATON silicone stopper (MPN 224100-178) is used to seal laboratory glassware, vials, and containers requiring a non-reactive, reusable closure. Its EP 3.2.1 compliance makes it suitable for pharmaceutical and biotech applications where material purity and chemical resistance are critical.

What are the specifications of the WHEATON 20 stopper size silicone stopper?

This WHEATON stopper 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 manufacturer part number is 224100-178.

Where to buy WHEATON silicone stoppers worldwide?

3G Electric supplies WHEATON silicone stoppers (MPN 224100-178) worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for pricing and lead time on this EP 3.2.1 compliant stopper.

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

Select the stopper size by matching the top diameter of the stopper to the inner diameter of the flask neck. For this WHEATON silicone stopper, size 20 corresponds to a 20 mm top diameter. Always verify the bottom diameter (13.1 mm) ensures a snug fit without excessive force.

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, 13 Stopper Size, 7.82 mm Bottom Dia, 12.7 mm Top Dia, 6.25 mm Overall Ht, Gray (MPN W988004-S)
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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)
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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: 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: 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, 3 Stopper Size, 18 mm Bottom Dia, 24 mm Top Dia, 25 mm Overall Ht, Blue, 0 Holes (MPN UNSST3)
UNITED SCIENTIFIC SUPPLIES
Stopper: Silicone, 3 Stopper Size, 18 mm Bottom Dia, 24 mm Top Dia, 25 mm Overall Ht, Blue, 0 Holes (MPN UNSST3)
Stopper: Silicone, 00 Stopper Size, 10 mm Bottom Dia, 15 mm Top Dia, 25 mm Overall Ht, Blue, 0 Holes (MPN UNSST00)
UNITED SCIENTIFIC SUPPLIES
Stopper: Silicone, 00 Stopper Size, 10 mm Bottom Dia, 15 mm Top Dia, 25 mm Overall Ht, Blue, 0 Holes (MPN UNSST00)

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Stopper: Bromobutyl, 20 Stopper Size, 13.2 mm Bottom Dia, 20 mm Top Dia, 14.2 mm Overall Ht, Gray (MPN W224100-407)
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