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air load tubes


Air Load Tubes
Coldwater offers suction roll air loading tubes made from blue "Vincon" and Neoprene tubing, and fittings in either 316 stainless steel or brass.

We stock Vincon tubing in all common metric and US diameters, and can provide fully assembled tube sets, or bulk spools for customer assembly. Fittings, plugs, ferrules, and stems from all major machine builders are in stock, and also available in bulk. We also stock spaghetti tubes, closed cell foam side seals, and protective rubber cushions for the bottom of the seal holder.

Crimpers, dies, and components for assembling customers' own tubes are also available.

Leak Prevention
shrink tube Excessive load tube pressure will cause over expansion of the tube in the relief notches of the seal. This is a common condition for tube failure. Coldwater Shrink Tubes eliminate this problem. Assembled sets are provided with our unique "Leak Prevention" shrink tube over the connection between the tube and ferrules.
air load tube
brochure Brochure (Letter Size) (A4 Size)


Physical Properties
  • Blue Vincon Air Load Tubing

Property ASTM Method Value or Rating
Durometer Hardness (Shore A), 15s D2240-91 55
Tensile Strength, psi (MPa) D412-92 1,831 (12.6)
Ultimate Elongation, % D412-92 406
Tensile Set (@ 75% of Ultimate Elongation), % D412-92 77
Tear Resistance, lb-f/inch (kN/m) D1004-93 159 (27.8)
Compression Set Constant Deflection, % @ 158°F (70°C) for 22 hours D395-89 Method B 65
Brittle Temperature, °F (°C) D746-79 -50 (-45)
Specific Gravity D792-91 1.180
Water Absorption, % 24 hrs at 73°F (23°C) D570-81 0.16
Maximum Recommended Operating Temperature °F (°C) - 165 (74)
Toxicity - Non-Toxic
Color - Blue
Unless otherwise noted, all tests were conducted at room temperature (73°F). Values shown were determined on 0.075" thick extruded strip or 0.075" thick molded ASTM plaques or molded ASTM durometer buttons.

RELATIVE CHEMICAL RESISTANCE PROPERTIES*
Acids Bases Salts Alcohols Ketones
conc. med. weak conc. med. weak
F E E E E E E F U
E = Excellent    F = Fair    U = Unsatisfactory
* All tests conducted at room temperatures.


  • Black Neoprene Air Load Tubing

Unaged Physical Properties ASTM Method Requirements Test Pass/Fail
Tensile Strength, Mpa (PSI) D412 1450 1644 Pass
Elongation at Break   250 300 Pass
Hardness, Type A, +/-5 D2240 50 52 Pass
Oven Aged Physical Properties ASTM Method Requirements Test Pass/Fail
70 Hours @ 212°F (100°C) D573      
Tensile Strength, % Change Max.   -13 +2.0 Pass
Elongation, % Cange Max.   -40 -15.0 Pass
Hardness, Type A, Pt. Change Max.   +15 +6 Pass
Compression Set Max % ASTM Method Requirements Test Pass/Fail
22 Hours @ 212°F (100°C)   35% 32.60 Pass
Low Temperature ASTM Method Requirements Test Pass/Fail
Max. C, Determine Actual Temp.   -55°C 5 of 5 Pass
Slab Cured: 20 Min. @ 320°F,     Button Cured: 20 Min. @ 320°F
contact info North America   +1 (404) 842-0012      /      Europe   +46 (0) 554-68 98 20      /      Asia   +86 (512) 5777-7691
info@coldwaterseals.com
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