Description

#1 BLACK PITCH is a semi-hard temporary cement used for a variety of blocking and holding applications. #1 BLACK PITCH is commonly used for blocking together lenses or work pieces that need to be edged or profiled.

Application

Depending on application, #1 BLACK PITCH can be applied in two basic methods:

1. Pre-melt #1 BLACK PITCH in a controlled heating vessel, and apply or pour molten pitch to blocking plate or lap, and then mount the workpiece.
2. Pre-heat the blocking plate or lap and work piece, and wipe the pitch across the heated tool and mount the workpiece.

#1 BLACK PITCH can be removed from the parts by using UPI’s UNICLEAR or UNICLEAR II. For best results, please consult with UPI technical staff to recommend optimal processing conditions.

Benefits

• Unaffected by water and coolant
  
• High dielectric constant
  
• Lack of porosity
  
• Wide array of applications

Physical Characteristics

• Appearance: Soft Black Bar
• Softening Point (°C): 62 ± 6
• Melting Point (°C): 73 ± 6
• Ball Penetration Test (70F, 500 g weight, 1hr) (in): 0.0020 ± 0.0010

Availability

Additional Product IDs

PB0100, PB0100NS