UNITED SCIENTIFIC SUPPLIES Stopper: Rubber, 7 Stopper Size, 30 mm Bottom Dia, 37 mm Top Dia, 25 mm Overall Ht
The UNITED SCIENTIFIC SUPPLIES Stopper: Rubber is a black rubber stopper in size 7, featuring a 30 mm bottom diameter, 37 mm top diameter, and 25 mm overall height with 2 holes. This product is manufactured by UNITED…
SKU 3G-OTH-381380
Also listed as: RST7H2 · RST7 H2
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.
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Product Description
The UNITED SCIENTIFIC SUPPLIES Stopper: Rubber is a black rubber stopper in size 7, featuring a 30 mm bottom diameter, 37 mm top diameter, and 25 mm overall height with 2 holes. This product is manufactured by UNITED SCIENTIFIC SUPPLIES INC under part number RST7-H2.
Frequently Asked Questions
What is a UNITED SCIENTIFIC SUPPLIES rubber stopper size 7 with 2 holes used for?
This black rubber stopper (size 7, 2 holes) is used to seal laboratory flasks, test tubes, and other glassware while allowing insertion of tubing or probes through the holes. It is common in chemistry, biology, and industrial labs for gas or liquid transfer applications.
What are the specifications of the UNITED SCIENTIFIC SUPPLIES stopper RST7-H2?
The stopper is size 7, made of black rubber, with a bottom diameter of 30 mm, top diameter of 37 mm, and overall height of 25 mm. It has 2 holes and is manufactured by UNITED SCIENTIFIC SUPPLIES INC under part number RST7-H2.
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 location. Contact us to source the RST7-H2 or other sizes.
How to select the right rubber stopper size for a flask?
Measure the inner diameter of your flask neck and match it to the stopper's top and bottom diameters. For the UNITED SCIENTIFIC SUPPLIES size 7 stopper, the top diameter is 37 mm and bottom is 30 mm. Ensure the stopper fits snugly without forcing, and choose hole count based on tubing needs.
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.
