--- product_id: 92371433 title: "United Scientific RSTPK4 Rubber Stopper, 2 to 8 Sizes Assortment, 2-Holes" brand: "united scientific supplies" price: "1055298₫" currency: VND in_stock: true reviews_count: 8 category: "Industrial" url: https://www.desertcart.vn/products/92371433-united-scientific-rstpk4-rubber-stopper-2-to-8-sizes-assortment store_origin: VN region: Vietnam --- # United Scientific RSTPK4 Rubber Stopper, 2 to 8 Sizes Assortment, 2-Holes **Brand:** united scientific supplies **Price:** 1055298₫ **Availability:** ✅ In Stock ## Quick Answers - **What is this?** United Scientific RSTPK4 Rubber Stopper, 2 to 8 Sizes Assortment, 2-Holes by united scientific supplies - **How much does it cost?** 1055298₫ with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/92371433-united-scientific-rstpk4-rubber-stopper-2-to-8-sizes-assortment) ## Best For - united scientific supplies enthusiasts ## Why This Product - Trusted united scientific supplies brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description Size:1-(Pack) Convenient assortments of various sizes of rubber stoppers in 1-lb. bags. ## Features - UNITSCI - RUBBER STOPPER ASSORTMENT, 2-HOLE SIZES, #2 TO #8 , PK1LB ## Images ![United Scientific RSTPK4 Rubber Stopper, 2 to 8 Sizes Assortment, 2-Holes - Image 1](https://images-na.ssl-images-amazon.com/images/I/41u-5N7RDKL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ RSTPK4 Rubber Stoppers, Sizes 2 to 8 - Assortment each has 2-Holes for your tubes from United Scientific *by C***G on February 19, 2016* These RSTPK4 Rubber Stoppers, Sizes 2 to 8 - Assortment each has 2-Holes for your tubes from United Scientific and are sized from a smallish #2 which will fit into the hole of a wine bottle completely and won't come out easily, has a small end smaller than a dime (16 mm), #3 whose small end is larger than a penny (18mm) and is even harder to get along with around a wine bottle and a #4's small end is about 20mm and top is 26mm, and this was the first I measured both top and bottom for slope comparisons. #5 is a doosey, in that it is reversed, with the bottom being larger than the top, at 27mm and 22.5mm, strange huh? #6 is the sad sack of this sack of stoppers and is 26 and 31mm. #7 is the sweet one that will probably never get taken advantage of with a measurement of 29-33-37mm. Woowoo! #8 is just boring at 32 and 40mm and as with the others, has two holes for 1/4" tubing.The bag contained 27 stoppers, and I'll let you guess which # it had the most of. Contest rules will determine the winner, based on likes and dislikes of this review. Occasionally I'll go over board on my reviewing, but when I started this review I guess the smell of the black rubber just was too much for me. With the holes and all, I would say just plug them if they are not needed. In the lab, these stoppers are invaluable to the nerds who work there. Oh, I know they are, but what about me. These stoppers are Good quality, just not as good as Silicone stoppers, but cheaper and at a List Price: $16.20 where you pay only $11.79 ($11.79 / EACH bag) and free Shipping for Prime Members, I'd say it is well worth if for 27 stoppers. There are fewer of some than others. You Save: $4.41 (27%) off the price of them Retail, as listed. So, go for it if you are looking to buy one stopper, as I was and was willing to drop the cash. You and I are sad! ### ⭐⭐⭐ Three Stars *by B***W on March 19, 2018* I use these for utility purposes, their rubber stoppers, not much to rave about ### ⭐⭐⭐⭐⭐ Standard Flask Stoppers, assorted sizes. *by D***E on February 7, 2015* They're rubber, they're stoppers, they have two holes. What else could you want them to be. There are a couple of each size included. I use them to insert 5mm glass tubing, a nice snug fit and seal. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.vn/products/92371433-united-scientific-rstpk4-rubber-stopper-2-to-8-sizes-assortment](https://www.desertcart.vn/products/92371433-united-scientific-rstpk4-rubber-stopper-2-to-8-sizes-assortment) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-06-03*