One Way Valve O-Rings
 
O-Rings - Gaskets.
Two models: Silicone and Viton
 
Specs & Models:
Viton A
I.D.=42mm
O.D.=50mm
Thickness=3.5mm
Viton B
I.D.=23mm
O.D.=28mm
Thickness=3mm
Silicone A
I.D.=42mm
O.D.=50mm
Thickness=3.5mm
Silicone B
I.D.=23mm
O.D.=30mm
T.D.=3mm