Omega Cement

OMEGABOND® High Temperature
Air Set Cements
Heat Conductive Thermal Shock Resistant Insulate Electricity Resists Oils, Solvents, Most Acids Adheres to Practically All Clean Surfaces** OB Series Starts at

$

36

OMEGABOND® 300

OMEGABOND® 500 Liquid OMEGABOND® 400 OMEGABOND® 500 Powder

Air Set Cements set or cure through loss of moisture by evaporation. Atmospheric conditionstherefore affect the drying rate. Air Set Cements are used mainly in thin film applications (applied in thicknesses less than 1⁄4")*.

3. Substrate—What materials will the cement be in contact with? 4. Application Considerations—Pot life, set time, method of dispensing, batch size, cure procedure.

5. Miscellaneous Considerations— Porosity, moisture absorption, electrical resistance, volumestability, clearances/tolerances.

Selection Criteria for Cements
1. Type of Application— Potting, sealing, encapsulating, assembling, bonding. Is a thick or thin film of cement required? This dictates whether or not an air set or a chemical set cement should be used. 2. Thermal Considerations— What is the maximum temperature that the cement must withstand? What degree of thermal conductivity is needed?What degree of thermal expansion is allowed? These parameters are then matched to the appropriate cement.

MOST POPULAR MODELS HIGHLIGHTED! To Order (Specify Model Number)
Price Description $ 36 OMEGABOND® 300 powder, 8 fluid oz (1 part cement; just mix with water) OB-400 36 OMEGABOND® 400 powder, 8 fluid oz (1 part cement; just mix with water) OB-500 POWDER 36 OMEGABOND® 500 powder, 8 fluidoz (2 part cement; mix powder with OB-500 liquid) OB-500 LIQUID 36 OMEGABOND® 500 liquid, 8 fluid oz (2 part cement; mix liquid with OB-500 powder) OB-KIT-1 54 Air set cement kit, ideal for research purposes; includes 2 fluid oz each of OB-300, OB-400, OB-500 powder and OB-500 liquid OB-TL 36 OMEGABOND® thinning liquid, 8 fluid oz used to dampen porous substrates before application of mixed OB-300or OB-400 cements , ** See next page for footnotes. *
Ordering Example: OB-400, is a high temperature air set cement, 8 fluid oz, $36.

Model No. OB-300

F-23

High Temperature Air Set Cements
Applications OMEGABOND 300 Assembling Sealing Insulating
®

OMEGABOND 400 Coating Embedding Insulating
®

OMEGABOND 500 Coating Dipping Casting
®

Physical Properties†
Type of Cement (1 or2 Part) Coefficient of thermal expansion, in/in°F Color Compressive strength, psi Dielectric constant Dielectric strength at 20°C (70°F), V/mil Dielectric strength at 400°C (750°F), V/mil Dielectric strength at 795°C (1475°F), V/mil Maximum service temperature, °C (°F) Modulus of rupture, psi Shear strength, psi Tensile strength, psi Volume resistivity at 20°C (70°F), Ω-cm Volume resistivity at400°C (750°F), Ω-cm Volume resistivity at 795°C (1475°F), Ω-cm Density (wet), lbs/ft3 Density (dry), lbs/ft3 Flexural strength, psi Modulus of elasticity, psi Pot life, hr Thermal conductivity, btu-in/ft2-hr-°F Mix ratio OMEGABOND 300 1 Part 6.2 x 10-6 Off white 3900 3.5 to 6.0 12.5 to 51.0 ≤15.0 ≤1.3 980 (1800) 460 710 410 108-109 104-105 102-103 OMEGABOND 400 1 Part 13.0 x 10-6 Tan to gray 33003.4 to 4.5 12.5 to 51.0 ≤15.0 ≤1.3 1425 (2600) 375 325 108-109 105-106 103-104 OMEGABOND 500 2 Part 10.93 x 10-6 Off white 1500††

F
1205 (2200)

1500

112 82 2000†† 3.6 x 105 1.0 4-6 1-part cement; just mix powder with water to a smooth, uniform consistency 11 1-part cement; just mix powder with water to a smooth, uniform consistency 2-part cement: just mix powder and binder; mix ratio forcast applications ranges from 1.87 to 2.0 parts powder to 1-part liquid binder by weight OMEGABOND 500® has a pot life of 1-hr after the powder and binder are mixed together; OB-500 reaches an initial air set after 4-hr at room temperature; a final set is only reached after oven baking at 55°C (130°F) for 4-hr; if the cement is to be used at temperatures above 100°C (212°F), OB-500 must under go...