perma USA - Sales & Support - FAQ
Can the perma blow a bearing seal?
Answer
No. It takes a least 240 pounds of pressure to blow a seal. The perma STAR VARIO can generate internal pressure of only 65 psi, so it is impossible to blow a seal. When installing permas, it is easy to blow a seal with a grease gun, which creates over 2,000 pounds of pressure. So be careful.

