Kit of 4 O-Rings (1.6" ID) and 2 Gaskets for Cat #300-4000 250 mL, 710300-0001 NN, Nalge Nunc, Part number 710300-0001-NN, Buy now from Nalge Nunc at Laboratory Disposable Products.

Nalge Nunc International is a distributor and manufacturer of plastic laboratory containers. Nalge Nunc subsidiary of Thermo Fisher Scientific, Nalge Nunc International was formed in 1995. Nalgene is Nalge Nunc's primary plastics product line includes jars, bottles, test tubes, graduated cylinders, and Petri dishes, etc.

In-addition Laboratory Disposable Products (LDP) is a one of the leading distributors of laboratory supplies, Reagents, Equipment, and safety products to the Life Science, Pharmaceutical industries, Hospitals, educational institutes, and many small businesses since 1982. Laboratory Disposable Products (LDP) is a proud Woman Owned Small Business. For more information please visit our website www.labdisposable.com or call on 800-332-LAB1 or email to sales@labdisposable.com .

Kit of O-Rings for Reusable Filter Holders: for #300- and #310-series 500, 1000 mL | 710300-0004 NN | Laboratory Disposable Products (LDP)