McMaster 9194N146 Chemical Resistant Viton Fluoroelastomer O Ring, High Pressure, 1 8 Width, Dash No. 218, ID 1 1 4" × OD 1 1 2", Pack of 5 38HY48 277V AC Lighting Technology Halogen 277V AC Lighting Technology Halogen Output Voltage 6 V DC Housing Material Emergency Lighting and Exit Signs Plastic Mounting Wall Housing Material Plastic Housing Color Emergency Lighting and Exit Signs Gray Battery Chemistry Lead Calcium Number of Lamp Heads 2 Emergency Illumination Time Emergency Lighting and Exit Signs 90 min Watts @ 90 Minutes 14 W Warranty 3 yr Emergency Illumination Time 90 min Optional Guard 4PG68 Head Lamps Adjustable Yes Standards Wet Location Housing Color Gray Operating Temp Polyester Webbing Hardware Single Action Carabiner with Loop Line Material 1680D Polyester Webbing Includes 45 Degrees Beveled Edge No these O rings can handle sudden pressure changes that would cause softer O rings to crack or deform 512" Hardness Durometer 95A (Hard) Maximum Pressure 2