The “SST-3 Secure Seal Tester” is used to test the seal integrity on the glass or plastic containers and cans. The SST-3 has been designed to address the special needs of sealing cans and bottles that use aluminum roll-on, twist crowns, or plastic caps. The SST-3 operates with compressed air, nitrogen, or carbon dioxide. By detecting gas leakage, rather than liquid, the Secure Seal Tester gives more sensitive and accurate readings. SST-3 is made from anodized aluminum, stainless steel, and plastic materials. The tester’s rugged construction withstands production line abuse yet is accurate enough for laboratory use.
Features of the Secure Seal Tester:
1) Adopts compressed air or CO2 to pressurize.
2) Measures with Positive Pressure Method, avoiding the deficiency when the measuring pressure is less than 1bar with Negative Pressure Method.
3) Measuring pressure range: 0-16bar (1.6Mpa)
4) Made from anodized aluminum, stainless steel, and plastic materials, solid and durable.
5) Equipped with Pressure Reducing Valve inside the machine, setting the max. testing pressure easily.
6) Some of these safety features are the series safety valve, the aligning whole arrangement in the lid, and the rapid venting characteristic. Others include the secure lid latch, the regulator relief valve, and the concept that the test container is submerged in the water surrounded by a cylindrically shaped tank.
7) Accurate flow control, adjustable rising speed. Adjustment range: the time to pressurize to 1Mpa can be adjusted to any time in the range of 5-60 seconds.
8) High sensitivity and high accuracy.
9) Pressure meter resolution: 0.05Mpa
10) Measuring pressure range: 0-16 bar (1.6 Mpa).
SST-3 Secure Seal Tester is a set of equipment used to evaluate the seal of an aluminum roll-on type closure to either glass, plastic containers, and cans. The test is performed by inducing gas, at a controlled rate, into the headspace of a bottle which is submerged in a water bath. The internal pressure build-up is meant to exceed normal conditions present in a carbonated beverage container. This excess pressure tests the security of the container finish-to-closure relationships, i.e., thread definition. Containers that are securely sealed will accept the excess pressure and show no signs of gas leakage. Containers that are not securely sealed will be revealed by the emission of small bubbles coming from the closure area.
These bubbles can be easily seen by the operator. The ability to observe gas leakage rather than liquid leakage provides for a maximum degree of test sensitivity. The gas pressure which is produced in a test container is controlled by a regulator and flow control valve. The ability to regulate the pressure permits the user to determine the maximum pressure a closure or container can withstand before gas leakage occurs. By controlling to flow rate a more accurate simulation of container pressure build-up is given.