Ask a research-administration question
Answers are drawn from CASRAI and the rest of the CASRAI corpus, with a link to every source.
Answers are AI-generated from CASRAI’s own published pages and can be wrong, so check the linked sources before relying on one; your question is logged without personal data — never sold, never used to train a third-party model — to show us what CASRAI is missing, so please do not type personal or confidential details. How we use this
CASRAI is the reference for research administration — bookmark it for the next question.
SKU 2440STRAIGHT
USA Lab
24/40 Straight Tube Vacuum Adapter
$29.95
In stockStraight tube vacuum adapter in 3.3 borosilicate glass with a 24/40 standard-taper joint. It gives a straight take-off from a 24/40 socket for running a vacuum or transfer line off a flask or distillation train. Joint size is the only dimension the supplier documentation records.
Buying through procurement?
Generate a formal quotation for 1 × this item, plus our W-9 — everything your finance department needs to raise a purchase order.
Ordering several items? Add them to your cart, then create one quote for the whole cart.
Description
A straight tube vacuum adapter in 3.3 borosilicate glass, fitted with a 24/40 standard-taper joint. It provides a plain, in-line take-off from a 24/40 socket – the usual way of bringing a vacuum or transfer line onto a round-bottom flask, a distillation head or an adapter train without introducing a bend.
The 24/40 designation is a standard ground-glass taper: 24 mm diameter at the wide end of the ground zone, 40 mm of ground length. It therefore mates with any other 24/40 joint regardless of who made the glassware.
Borosilicate 3.3 is the low-expansion glass grade used for general laboratory glassware, chosen for its resistance to thermal shock and to most solvents and acids.
What the documentation does not cover
The supplier listing records the glass grade and the joint size only. Tube outside diameter, overall length and any vacuum rating are not published, and we have no manufacturer datasheet for this item. Ask us before ordering if any of those figures are critical to your set-up.
Frequently asked questions
What joint size does this adapter take?+
24/40. That is a standard ground-glass taper - 24 mm diameter at the wide end of the ground zone over a 40 mm ground length - so it mates with any 24/40 joint from any glassware manufacturer.
What is it made from?+
3.3 borosilicate glass, the low-expansion grade used for general laboratory glassware.
Is a vacuum rating published for this adapter?+
No. The supplier listing states the glass grade and joint size only. No pressure or vacuum rating, and no manufacturer datasheet, was supplied with this product.
What are the tube dimensions?+
Tube outside diameter and overall length are not documented in the source listing. Contact us before ordering if you need to confirm that it will fit a particular hose or clamp.
What is included?+
The glass adapter itself. Joint clips, sleeves, grease and any hose fittings are not itemised in the listing and should be assumed to be separate.
