Rubber Seals

Moulded with EPDM rubber having good resilience properties.Vent seal shall positively open in the range of 3-6 psi when there is an increase in the internal pressure of the cell and shall close immediately below the opening pressure when there is a decrease in the internal pressure of the cell. The vent seal is opened and closed for 25 cycles in a chamber maintained at temp of 55+/- 3 deg C. And for 5 cycles at room temp , called as 1 unit. Vent seal is tested for 7 units .minimum time between consecutive cycles (rest period) is 60 sec and minimum time between consecutive unit is 30min. The vent seal is kept in chamber maintained at 75 deg C for 72 hrs under pressure such that it is kept in open and is tested for opening and closing for 5 cycles at room temperature.