Is EPDM rubber or nitrile rubber better for 'O' rings?
O Ring CS 4 mm ID 192 mm OD 200 mm Material With Silicone VMQ NBR FKM EPDM ORing Seal Gask| | - AliExpress
10 Pieces 32mm OD 25mm Inner od. Black Nitrile Rubber O Ring Oil Seal Ring - Walmart.com
DEMAISI NBR Rubber O ring Band Rings
O-rings NBR - 60 Shore A
NBR O-Ring
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uxcell 20Pcs 14mm x 1mm Rubber O-Rings NBR Heat Resistant Sealing Ring Grommets Red: Amazon.com: Industrial & Scientific
Nitrile Rubber O-Ring CS 2.4mm NBR Oring Seal Sealing OD 6 - 200mm Oil Resistant | eBay
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-rings NBR - 60 Shore A
Rwdr-K7 Type NBR Material China High-Quality Rubber O Ring Oil Seal for 12019116b - China Dmhui 1508048 Seals, NBR/HNBR FKM PTFE PU Oil Seal | Made-in-China.com