Cryogenic Storage Systems
Customer: Medical Device Manufacturer
Application: Cryogenic Storage Systems
Issues:
- Support both rotary (5 rpm) and reciprocating movement (102 mm / 40 inch stroke) under a 5 mm / 2 inch Hg vacuum
- Resistance of liquid nitrogen and ice
- Low friction and no stick-slip with infrequent operation (2 to 3 times per day for 1-2 minutes) required
Solution
- Variseal® M seal in Zurcon® Z80 with two nested load V-springs
Since the motors and drives are external to the tank, the cryogenic seal seals the feed port through which the manipulator arm places and retrieves samples in the storage tank. The seal met all performance requirements and provided long operating life.
