Round Observation Port Sights In Stock

The standard housings for these peep sights are made of carbon steel, but fabrication in other metals is available. Stock sizes include 4", 6", and 8" with either carbon or stainless steel housings. Additional sizes and stainless steel units are available upon request.

Ordering Information:

• Add code "P" for Pyrex or "Q" for Quartz at the end of the model number.
• "E" dimension refers to the mounting bolt pattern.
• Mounting flange gaskets are provided with all complete units.

Glass Options:

• Quartz Clear ("Q"):
  • Maximum intermittent operating temperature: 2048°F
  • Maximum continuous operating temperature: 1600°F (Glass Only)
• Pyrex Clear (Borosilicate Glass, "P"):
  • Maximum intermittent operating temperature: 554°F
  • Maximum continuous operating temperature: 446°F (Glass Only)
  • Heat strengthened for safety with a heat-reflecting shield

Note: Temperature ratings apply to the glass only. Housing ratings vary depending on the type of steel used.