3M™ Low Outgassing High Shear Polyester Tape 8439FL is a silver colored polyester film tape for the demanding requirements of hard disk drive and related electronics manufacturing.

The metalized polyester backing offers low static and diffusivity and is complimented with a very low outgassing acrylic adhesive. This product offers a high level of permanence, yet is cleanly removable from most substrates even after extended heat treatments. 3M™ Non-Silicone Polyester Liner 5932 completes the construction. 3M™ Clean Seal Tapes are low outgassing tapes, which help reduce the risk of chemical contamination leading to head corrosion and media fogging which may cause hard disk drive failure. Standard Lead Time: 30 Calendar Days

• Bleeds static charge rapidly to help reduce risk of product damage due to electrostatic discharge
• Low water vapor transmission rate provides an effective contamination barrier
• Low outgassing and low extractable ionic content helps reduce risk of chemical contamination
• Clean removability from a wide variety of substrate materials eliminate cleanup during rework operations
• Long aging - adhesive stable over long periods of time

• Color: Silver
• Part Number: 8439FL
• Width: 5.5 in