A shaft seal assembly for maintaining a seal during shaft misalignment
comprising a first sealing means adjacent said shaft with a defined
clearance between said shaft and said sealing means, said shaft moveable
axially in relation to said first sealing means; a second sealing means,
said first sealing means partially encompassed within second sealing
means and in cooperative communication with said second sealing means; a
third sealing means, said second sealing means partially encompassed
within third sealing means and in cooperative communication with said
third sealing means, said third sealing means attached to said housing or
vessel and allowing said first sealing means and second sealing means to
cooperatively respond to said forces produced by angular misalignment of
said shaft during rotation of said shaft while maintaining defined
clearance between said shaft and said sealing means.