HEAVY WALL

DUCO® High-Pressure ‘HEAVY-WALL’ (Wall Thickness: 5.15 mm) Boiler Sight Gauge Glass. (5/8″ OD x 8-3/8″ Long) with 2 EPDM Gaskets. OD: 27/32″ (21.50 mm). Its Heavy Wall thickness ( 13/64″ =5.15mm) provides outstanding working pressure and product life.

DUCO® High-Pressure ‘HEAVY-WALL’ (Wall Thickness: 5.15 mm) Boiler Sight Gauge Glass. (5/8″ OD x 4-7/8″ Long) with 2 EPDM Gaskets. Considerably higher working pressure than other Ordinary-Thickness-Wall sight glasses.