Stainless Steel 2-Inch End Cap +Weld On Ferrule +Tri-clamp+Gasket Sanitary | eBay
Main differences between ferrules and end caps | FORTAPS
Amazon.com : Dree 10x .335 Golf Ferrule Cap Fit for Taylormade SIM Max M4 M5 M6 M3 M2 M1 Shaft Adapter Sleeve : Sports & Outdoors
DT-31 Ferrule Cap 63,50 x 1,65mm SF1
Ferrule OD Sanitary Stainless Steel 304 Tri Clamp Ferrule + End Cap + Tri Clamp + Silicon Gasket 76/89/102/108/133/159/219mm|Pipe Fittings| - AliExpress
Tri Clamp Ferrule End Cap 19mm 63mm OD Sanitary SS304 Tri Clamp with Silicon Gasket|Pipe Fittings| - AliExpress
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Shimadzu Scientific US Webstore - FERRULE-CAP 0.5MM ID GVF005 10/PKG
Ferrule OD Sanitary Stainless Steel 304 Tri Clamp Ferrule+End Cap+Tri Clamp+Silicon Gasket 102/108/133/159/219/254/273/305/325mm|Pipe Fittings| - AliExpress