Ace Glass 13445-420

<p><strong>13445-420, Replacement PTFE/peek sleeve seal for 10mm shaft, fits 13445-30, -32 and -36 bearings </strong> </p> <p>Debris-free PTFE stirrer bearing totally eliminates flaking into the reaction. Vacuum tight and chemically resistant. 500rpm maximum with polished glass or stainless steel stir shafts. Not recommended for use with precision ground or PTFE covered, stainless steel shafts. </p>