Across International Rings
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35# PTFE Center Sealing Ring 12mm inner 32mm outer
Across InternationalPTFE coated silicone sealing ring for Ai SolventVap series rotary evaporators and R series glass reactors. Center frame is made of solid PTFE.
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5000mL Flask Cork Ring Stand
Across InternationalLaboratory cork ring stand for round-bottom flask.
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