Lamons ORBN70A113X500 Model 113 Buna/NBR Nitrile O-Ring 70A Durometer Black, Sterling Seal and Supply (500 Pack): Amazon.com: Industrial & Scientific
NORMATEC® O-Ring NBR 70.00-01 | APSOparts
METRIC O-RING NBR 70sh | Athena
FDA Port O-Ring, NBR - Lighthouse Process
KOOTANS 1200Pcs Nitrile Rubber O Ring Kit 24 Sizes O Rings Assortment Kit Set Sealing Washer NBR Metric o-Ring Assortment for Plumbing, Gas, Automotive and Faucet Repair, Resist Oil and Heat O-Rings:
O-Ring NBR 125 x 2.5 mm for Mini Arc Melter MAM-1, Part 8262– MSE Supplies LLC