NEW Beckman Overspeed Disk gasket Ultracentrifuge Rotor 

SW 28.1 / 42K # 330329

   This is awesome.   You will love this.  Hard to find.  Got this from Fortune 500 Company overstock sale.  This is old school but will work just fine.  Please see description above.  This has been in deep storage for years, will work or money back.

Please check out my Beckman accessories, for this Centrifuge model, that I am listing separate.  I bought a bunch of this stuff together.  

FREE SHIPPING.