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Item #:
6177596
United ScientificTM RSTPK4 Premium Laboratory Black Rubber Stoppers, 2 Hole | Good to Seal Bottles, Tubes and Many Other Containers - Black Lab Plug
Item #:
6177596
GHS 356
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
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In stock
Imported from USA store
QTY:
Order now and get it around Wednesday, August 12
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Reusable, premium natural rubber stoppers designed for a sustainable laboratory environment.
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What Stands Out
Versatile Sealing
These stoppers are designed to effectively seal a variety of containers including bottles and tubes, ensuring no leaks or contamination occurs during experiments.
Assorted Sizes
The package includes assorted sizes from #2 to #8, catering to diverse laboratory needs and allowing flexibility in sealing various container types.
Premium Quality
Crafted from high-grade black rubber, these stoppers provide exceptional durability and chemical resistance, ensuring reliable performance in demanding laboratory environments.
Product Details
Who Should Buy?
-
Laboratory Technicians
Ideal for sealing various laboratory bottles and tubes during experiments and storage to prevent contamination.
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Home Brewers
Perfect for crafts like beer and wine making, providing airtight seals to ferment and store beverages.
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Teachers and Students
Useful for educational science projects requiring safe and secure closures for laboratory glassware.
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Chemical Storage
Not suitable for highly volatile chemicals that require specialized closures to ensure safety.
Product Description
United ScientificTM RSTPK4 Premium Laboratory Black Rubber Stoppers, 2 Hole | Good to Seal Bottles, Tubes and Many Other Containers - Black Lab Plug | #2 to #8 Assorted Sizes | 1LB of Stoppers.
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Customer Questions & Answers
-
Question:
Are these stoppers reusable?
Answer: Yes, all United Scientific rubber stoppers are reusable. -
Question:
What temperature range can these stoppers withstand?
Answer: They can withstand temperatures from –25 to 70°C (–13 to 158°F). -
Question:
What sizes are included in the assorted pack?
Answer: The pack includes assorted sizes from #2 to #8.
United Scientific Rubber Stoppers Editorial Review
The United Scientific RSTPK4 Rubber Stopper assortment has garnered positive feedback from users who appreciate its practical utility and reasonable pricing. The set includes sizes ranging from #2 to #8, with each stopper featuring two holes, making them versatile for various applications including laboratory use and sealing bottles. Customers commend the sturdy quality of the stoppers, although some express a preference for silicone options, citing them as being slightly superior. Typically used for laboratory purposes, the stoppers fit snugly into tubes, and many users report satisfaction with the fit for their specific needs, including inserting glass tubing. Users have noted the specific measurements of each size, detailing how they fit into wine bottles and other standard openings, affirming that they serve their designed purpose well. The cost efficiency of purchasing the entire set, which includes 27 stoppers, has been highlighted as a significant benefit, especially Considering the discount off the retail price. Overall, the United Scientific RSTPK4 Rubber Stoppers offer a reliable choice for those in need of basic yet functional stoppers, and the assorted sizes provide adequate options for varied applications. **
Customer Reviews & Ratings
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Pros
- Good quality rubber stoppers
- Versatile with two holes for various tubing sizes
- Assortment offers a range of sizes (2 to 8)
- Cost-effective with a bulk purchase (27 stoppers)
- Snug fit for standard applications
Cons
- Not as high-quality as silicone alternatives
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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SAO JOHN
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“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
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GHS 356
Order now and get it around Wednesday, August 12
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
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Features & Benefits
- Made from premium natural rubber for durability and elasticity.
- Smooth tapered design for easy plugging and removal.
- Perfect for sealing laboratory bottles, tubes, and containers.
- Available in assorted sizes #2 to #8 for versatile use.
- Low sulfur content and withstands a wide temperature range (–25 to 70°C).
- Promotes a sustainable and eco-friendly laboratory or classroom setup.
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