https://www.performance-pcs.com/monsoon-hardline-compression-premium-silicone-lock-collar-seal-for-1-2-x-5-8-fittings-10-pack-black-phor-1258-bk.html18657Monsoon Hardline Compression Premium Silicone Lock Collar Seal for 1/2 x 5/8" Fittings - 10-Pack - Blackhttps://www.performance-pcs.com/media/catalog/product/t/m/tmppicsmon02_1.jpg1.991.9900USDInStock/Water Cooling/Fittings & Connectors0 0Monsoon00https://www.performance-pcs.com/media/catalog/product/t/m/tmppicsmon02-2_1.jpg0.9400add-to-cartMonsoonNoO-ring1/2" x 5/8"Matte Black