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Compression ferrules are sized based on the OD of the tube, not the insert size. For example, a 1/2" OD tube requires a 1/2" ferrule. Precision Fit for 1/2" OD Tubing – Designed specifically for 1/2" tubing, ensuring a leak-free, high-pressure connection in pneumatic, plumbing, and HVAC systems.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.