38mm and are tapered in design and made from highly pliable (or flexible) polyethylene, they not only can be applied to fit snugly but are readily removable...whether used for capping or plugging. Durometer hardness is 41D-46D. Maximum temperature is 150° F. Color is red. Especially recommended for use with 38mm OD test tubes.
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Technical Specifications::
Cap fits the following tubes: 38mm OD Test Tubes
Shipping Time:
In stock items usually ship the next business day after your order is received. Custom printed items, with standard print service, usually ship within 2-3 business days. Note: The speed in which your order arrives is determined by the freight method you choose at checkout.
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