Self-aligning, lubricant free PTFE Trubore bearing or combination bearing / debris trap. Use with 8074 stainless steel or 8075 polished 10mm od glass shafts. Debris trap model prevents bearing-wear particles from contaminating the reaction vessel and has a side port for clean-out, evacuating or purging. Straight model available with optional hose connection port. All bearings stir in either direction and achieve vacuum down to 1mm Hg. Not recommended for use with precision ground glass shafts.