Double-acting mechanical seal with 24 mm shaft diameter for size 2 homogenisers from Vakumix and NETZSCH Vakumix – suitable for plants with approx. 125 to 500 litres batch size and for circulation agitators in pre-phase vessels. Price: EUR 2,574.10 net (EUR 3,063.18 incl. 19% German VAT), plus shipping of EUR 49.95 per seal (insured express, Germany).
Delivery time approx. 1 week (dispatch after 3–7 working days). Sales exclusively to business customers.
Compatible – not an original part: This mechanical seal is a bought-in part from specialised seal manufacturers and fits homogenisers from NETZSCH Vakumix and Vakumix. It is not an original part and this is not an offer from NETZSCH or Vakumix.
Typical applications of the 24 mm seal
With a 24 mm shaft Ø, this mechanical seal fits size 2 homogenisers. They work in medium-sized production plants with batch sizes of around 125 to 500 litres, as commonly used in cosmetics and pharmaceutical production for creams, lotions and ointments.
- Medium-sized production plants from 125 to 500 litres
- Cosmetics, pharmaceutical and food production
- Also suitable for circulation agitators with a 24 mm shaft
Technical data
| Feature | Mechanical seal 24 mm |
|---|---|
| Shaft Ø | 24 mm |
| Homogeniser size | Size 2 |
| Batch size of the plant | Approx. 125 to 500 litres |
| Design | double-acting |
| Housing | V4A stainless steel |
| Seal rings | 4 × silicon carbide (SiC), alternatively e.g. carbon against chrome cast iron |
| O-rings | FKM, others e.g. EPDM on request |
| Suitable for | Homogenisers from Vakumix and NETZSCH Vakumix, circulation agitators in pre-phase vessels |
| Price | EUR 2,574.10 net · EUR 3,063.18 incl. 19% VAT |
| Delivery | delivery time approx. 1 week, insured express shipping within Germany EUR 49.95 per seal |
Why silicon carbide?
Silicon carbide (SiC) is particularly wear-resistant – even with abrasive raw materials. That is why the standard version uses four SiC seal rings. Other material pairings are possible for special applications.
Replace seal and shaft together
If the mechanical seal is leaking, the shaft should be checked too: with increasing age, imbalance can occur, and the shaft wears in the area of the seal. A new seal on an old shaft lasts much less long. We supply the matching shaft and fit both on request in our workshop in Weyhe or on site at your plant.
Service around your seal
- Damage analysis of every removed seal with a short report
- Testing after repair or fitting, on request with a test report
- Collection by courier and return delivery
- Exchange seal to avoid downtime
Frequently asked questions about the mechanical seal 24 mm
How do I know whether my homogeniser has a 24 mm shaft?
Size 2 homogenisers in plants of about 125 to 500 litres usually have a 24 mm shaft. Measuring the shaft diameter in the seal area or checking the plant documentation is the reliable way. We are happy to check this from photos.
When should the 24 mm mechanical seal be replaced?
Signs are leaks, product in the barrier fluid, noise or increased temperatures at the seal housing. When replacing the seal, we recommend checking the shaft as well, as it wears in the seal area.
Do you also fit the 24 mm seal?
Yes. We carry out the seal replacement in our workshop in Weyhe or on site at your plant – on request together with a new shaft and with a test report.
Other sizes
Last updated: October 2026
All trademarks and product names mentioned, in particular Vakumix, NETZSCH, LambdaVita, KappaVita and GammaVita, are the property of their respective owners and are used solely to identify the products offered. This is not an offer from the manufacturer. SEEFRIED Verfahrenstechnik is an independent supplier and is not affiliated with these manufacturers; the mechanical seals offered are compatible spare parts, not original parts.