Specialty Materials
Architectural Flex Moulding (RU-280)
RU-280 A/B Two-Component, Fast Curing, Semi-Flexible (80A) Urethane Elastomer that is easy to process. This system is compatible with Tin RTV Silicone Molds. Parts are easily stainable with oil or water based stains. Applications include automotive, sporting goods, tooling, architectural flexible mouldings, prototype parts, Special FX, coatings and any application where rapid cure, high resiliency, firm rubber part is required.
Features:
- 100% Solid Urethane
- Easy to Process
- Rapid Mold Cycle
- Superb staining capabilities with either oil or water based stains
Typical Physical Properties:
(For Components)
Component A Component B
Viscosity (cps): 300 1250
Mix Ratio, by Weight: 25 100
Mix Ratio by Volume: 18 82
Color: Brown Off White
(For Cured Material)
Hardness: 80 A Shore
Tensile Strength (psi): 300
Elongation %: 150
Tear Resistance (psi): 280
Coverage: 20.85 in3/ lb
Reactivity Data:
Gel Time: 7 minutes
De-Mold Time: 25-45 minutes
Mixing & Curing Instructions:
Measure out proper amounts of components, 1 part A to every 4 parts B, ensuring B component has been premixed prior to blending components together. Once blended, pour into silicone RTV mold and allow part to cure, 25-45 minutes, depending on thickness of part, temperature of materials and mold. If part is highly detailed, work material into the mold surface for best results. Parts can be easily stained with oil or water based paints. **Material is very aggressive on Silicone RTV mold surface and using a release agent is suggested to pro-long mold life. The technique of applying ER 2300 spray mold release onto mold followed by a light dusting of mold with talc or like powder will help improve overall mold life.
STORAGE:
RU-280 is sensitive to cooler weather under 75°f and can begin crystallizing and solidifying. If material becomes lumpy and grainy due to cold weather, reheating material to 125° to 150°f will bring material back to original viscosity. Electric drum or pail heater will need to be used to avoid material problems. Call Technical support for further information.
The information and data contained herein are based on information we believe reliable. Each user of the material should thoroughly test any application and independently conclude satisfactory performance before commercializing. Suggestions of uses should not be taken as inducements to infringe on any particular patent