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134 VAC U U M C U P S & F I T T I N G S 6 For more information or for additional configurations, please contact us at NASInsideSales@imi-precision.com Conversion Chart – Vacuum vs. Pressure % Vacuum "Hg mmHg bar PSI 10 3 76.92 -0.1 -1.47 20 6 153.85 -0.2 -2.94 30 9 230.77 -0.3 -4.41 40 12 307.69 -0.4 -5.88 50 15 384.62 -0.5 -7.35 60 18 461.54 -0.6 -8.82 70 21 538.46 -0.7 -10.29 80 24 615.38 -0.8 -11.76 90 27 692.31 -0.9 -13.23 100 30 769.23 -1.0 -14.70 Facts to Remember: 50 mmHg = 1 PSI 1mmHg = 1 torr (vacuum) 1"Hg = 25.4 mmHg 2"Hg = 1 PSI 29.92"Hg = 100 Kpa 14.7 PSI = 100 Kpa 14.7 PSI = 29.92"Hg 14.7 PSI = 760 mmHg * Standard durometer for vinyl cups is A50 ±5 points — may vary with color. Other Materials Available - please consult factory: FDA Vinyl, Anti-Static Vinyl, FDA Silicone. Vacuum Cup Terms and Definitions: Bellows: The fold or collapsible area that allows the cup to compress like an accordion Convolution: The folded area of a bellows cup that makes up 1 external "V" Cleats: Bottom protrusions used for maintaining a larger vacuum area Durometer: Method by which the hardness of a material is gauged Insert/Fitting: Metal piece bonded or inserted into the material to allow fastening by threads or bolts Vacuum cup: Cup that requires the use of an external vacuum source to adhere to a surface Vacuum Level: The magnitude of suction created by a vacuum generator typically measured in inches of mercury "Hg or [mbar] Vacuum Flow: The volume of free air induced by the vacuum generator per unit of time, typically measured in SCFM (L/min) Porosity: Ability of air to pass through a material Standard Atmospheric Pressure Measured at Sea Level: 1 ATM = 14.7 PSI = 29.92"Hg = 760 mmHg = 1 bar Materials Temperature Range Wear Resistance Oil Resistance Series Durometer Application Silicone - Red -40°F to +482°F (-40°C to +250°C) Fair Fair NCF, NSB, NSF 50 FDA compliant, high temperature performance and non-marking Silicone - White -40°F to +482°F (-40°C to +250°C) Fair Fair PRF, NUB, NUC, NUU 45 High temperature performance and non-marking Silicone - White -40°F to +482°F (-40°C to +250°C) Fair Fair NCF, NSB, NSF 50 High temperature performance and non-marking Vinyl - Blue +32°F to +125°F (0°C to +52°C) Excellent Fair NVC-B, NVC-F, NVC-MB, NVCO 20-75 General-purpose material with excellent wear capabilities Vinyl - Blue +32°F to +125°F (0°C to +52°C) Excellent Fair NOV 55 General-purpose material with excellent wear capabilities (Oil Resistance) Vinyl +32°F to +125°F (0°C to +52°C) Good Excellent NVC-B, NVC-F, NVC-MB, NVCO 40-60 Excellent for oil resistance applications VACUUM CUPS Vacuum Cup Selection Guide