These polyethylene quick disconnects are useful for joining tubing of glass, rubber, or plastic. 
Plastic Tubing Disconnects fit tightly together. 
They are tapered to accommodate a range of diameters. Replaces expensive adapters.
Reducing connectors can be made by combining:
No. 228705 with 228715 to accept 4-5-6-7-8 mm I.D. tubing
No. 228725 with 228765 to accept 8-9-10-11-12 mm I.D. tubing
No. 228775 with 228785 to accept 12-13-14-15-16 mm I.D. tubing
    
        
            |   | 
            228705 | 
            228715 | 
            228725 | 
            228765 | 
            228775 | 
            228785 | 
        
        
            | Nominal O.D  | 
            4/5/6 | 
            6/7/8 | 
            8/9/10 | 
            10/11/12 | 
            12/13/14 | 
            14/15/16 | 
        
        
            Crest O.D. mm max/min 
             | 
            3.5/6.0 | 
            5.3/7.6 | 
            7.2/9.7 | 
            9.3/12.2 | 
            11.0/14.4 | 
            13.2/16.0 | 
        
        
            Bore mm 
             | 
            1.6 | 
            2.7 | 
            3.6 | 
            5.5 | 
            7.3 | 
            8.8 | 
        
    
Certificate of Compliance Quick Disconnects