Have a 3/8in Swagelok or Standard Compression Fitting that you want to reuse? This compression replacement Nut is the perfect solution. Compatible with Swagelok and USA Standard compression systems for 3/8" OD tubing, use this in combination with our Replacement Ferrules to completely recondition your vapor extraction system.Specifications: Connection - 3/8in OD TubingMaterial - 304 Stainless SteelQuantities - Min order of 10Uses:Repair or replace Swagelok Compression fittings