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8-425mm Flangeless Black Open Hole Polypropylene Closure, PTFE/Red Rubber Septa, 0.040" 100/PK 1000/CS
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8-425mm Flangeless Black Open Hole Polypropylene Closure, Red PTFE/Silicone Septa, 0.060 with Slit 100/PK 1000/CS
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8-425mm Flangeless Black Open Hole Polypropylene Closure, Red PTFE/Silicone Septa, 0.065" 100/PK 1000/CS
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