What type of leak rates is possible?

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Almost all of the leak rates of our products fall between 1 x 10-6cc/sec to 1 x10-9cc/sec at 1 atmosphere (1 bar) pressure differential. PAVE products are capable of helium leak rates in the 10^-9cc/sec even at high pressures of 6,000 psi (400 bar) using multiple )-rings and various types of wires or pins! The actual calibrated leak rate will vary due to size and type of housing, number of wires or pins and the actual pressure differential.

Though the leak rates are very low, we have a very wide range of products to fit the customer's budget and performance requirements based on the materials specified and the quantities ordered. We serve a wide range of customer types from very small pressure requirements to customers with very high pressures or vacuums. We perform low cost nitrogen bubble leak test at 5 bar, calibrated helium leak testing or high pressure nitrogen bubble leak testing to 600 bar or more. We can do either 100% or sampling based on quality assurance standards. Even a very small pressure differential of only 1 psi can create significant problems if the leak rate must be very small or essentially non-detectable.

We also make explosion-proof (Exd, UL, CSA, or FM) seals or lower cost "environmental" seals if sealing only to the cable jacket is required with no seal to the inner conductor required. The customer specified leak test procedure will help determine how rigorous or hermetic the seal must be. We can offer guidance as necessary in helping define an appropriate leak test procedure so the customer gets the quality seal he needs. It is difficult to always correlate a helium leak rate test to a moisture-proof leak rate.