These cuffs allow you to use hose clamps on the corrugated Shields spiral reinforced Vacuum Hoses. For a watertight seal you need to apply a PVC cement sealing compound. This makes a permanent seal - with the cuff, effectively, becoming the end of the hose.
• Series 140 and 145 (lined) Standard Vac hoses have a left hand spiral and use Series 142 Cuffs
• Series 141 Multiflex Vac hose has a right hand spiral and uses Series 147 Cuffs