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02-707-13Our 13mm Blue Rubber Tube Closures offer secure sealing for laboratory tubes. Made with high-quality rubber, these closures ensure airtight and leak-free storage for samples and reagents, maintaining sample integrity.
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02-707-5Designed for a precise fit, our 16mm Blue Rubber Tube Closures provide excellent sealing for lab tubes. Crafted from durable rubber, they offer reliable protection against contamination and evaporation.