Product Description
Seal a stirrer shaft against vapor loss and air entry while it turns. This threaded bearing tightens a PTFE sleeve and O-ring around the shaft, giving a seal that can be adjusted for snug, low-friction operation during long or volatile reactions.
This listing is for Kimble catalog number 781050-2942: 10 mm PTFE and Glass Stirrer Bearing, 29/42 mm. The bearing has a threaded glass ground joint body, a PTFE O-ring, a precision-bore PTFE sleeve bearing and a PTFE tightening screw with lock nut and washer, sized for 10 mm shafts. It fits 24/40, 29/42 or 45/50 joints with an overall length of about 150 mm. Glass is low extractable borosilicate meeting USP Type I and ASTM E438. Order it from LIGHT LABS and keep your lab stocked with genuine DWK Life Sciences products.
Key Features
- Adjustable seal – PTFE tightening screw compresses the seal around the shaft.
- Precision PTFE sleeve – Low-friction bearing surface.
- Lock nut and washer – Holds the setting in place.
- Three joint sizes – 24/40, 29/42 or 45/50.
- 10 mm shaft – Fits standard 10 mm stirrer shafts.
Specifications
| Catalog Number | 781050-2942 |
| Brand | Kimble (DWK Life Sciences) |
| Description | 10 mm PTFE and Glass Stirrer Bearing, 29/42 mm |
| Sold As | Each |
| Glass | Type I, 33 expansion borosilicate glass |
| Standards | USP Type I; ASTM E438, Type I, Class A |
| Shaft diameter | 10 mm |
| Joint size | 24/40; 29/42; 45/50 |
| Overall length | 150 mm |
| Seal components | PTFE O-ring, PTFE sleeve, PTFE screw |
Available Options
- 781050-2440 – 10 mm PTFE and Glass Stirrer Bearing, 24/40 mm
- 781050-4550 – 10 mm PTFE and Glass Stirrer Bearing, 45/50 mm
Applications
- Sealed overhead stirring
- Volatile solvent reactions
- Inert atmosphere reactions
- Reflux with stirring
