Sintrex Corporation

These rings are used for weighing down containers and prevent flasks from floating or tilting over in water baths by putting the ring around the flasks’ necks. The strong Silicone coating protects the surfaces of flasks and workplaces.&  one with The open C-shape allows a flexible application according to customer needs, even for containers  it comes in differnet diameters suitable for Flask, Measuring Cylinderof different caapcities 
it is very durable 
.

• very good chemical and thermal resistance
• individually packed

Glass filtrartion flask from capaicty 100 ml,250 ml to 10000 ml also we make as per customer's requirement