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20 mm Bellow Seal (100/pk)
Brand: Chromatography Research Supplies Inc20 mm Bellows Seal (100/pk) Chlorobutyl rubber faced with PTFE for superior sample protection. Only PTFE contacts the sample, while the soft outer ring of rubber makes a tight seal. Packaged: 6 in. x 6 in. plastic bag; Weight: 136.1 g.
