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Sterling Seal ORBN-650X1 Sterling Seal & Supply, Buna N - Nitrile 70 Durometer O-Ring Kit: SKU#ORBN-650X1: QTY 380 O Rings in kit (1 KIT) (Pack of 380): Amazon.com: Industrial & Scientific
Metric O-Ring Groove Design Reference Guide
O-Ring Size Chart for U.S. & Metric Standard Sizes