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Cobalt Blue Glass No. 6515

MACPHERSON Brand Cobalt Blue Glass No. 6515 has been a favorite of blast furnace operators for over thirty years. Our Cobalt Blue glass has a deep rich blue color while maintaining excellent visibility. It is able to block out the red glare, allowing the operator to see the fine detailed shape of the flame.

Cobalt Blue No. 6515 was developed for blast furnace tuyeres with the support of local steel mills. In recent years, we have supplied our Cobalt Blue for observing white-hot molten metals in BOF’s, EAF’s, refining stations, and casters of all sizes.

Cobalt Blue Glass No. 6515 is available in 1/8” thickness only. We stock standard diameter sizes of:

¾”, 1”, 1-1/8”, 1-1/4”, 1-1/2”, 1-15/16”

Heat resistant glass should be used between our Cobalt Blue No. 6515 and the heat source.

MACPHERSON & COMPANY carries a line of sight and gage glass for your convenience.

Note: maximum size is 4-3/8” x 16”, and is not recommended for TIG welding.

 

 

 

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95 Pelret Industerial Parkway, Berea, OH 44017