Normac NR-806 is a two component polyether based urethane casting system yielding a cured hardness of 80 Shore A.
PREPOLYMER PROPERTIES
Prepolymer: TDI - Ether
Appearance @ 27OC (80OF): Clear liquid
Viscosity @ 100OC (212OF): 600 cps
PROCESSING INFORMATION
Curative pph (ratio): 20 (100 parts "A" to 20 parts "B" by weight)
Stoichiometry: 95
Prepolymer Temperature: 27OC (80OF)
Curative Temperature: 27OC (80OF)
Working Pot Life: 30-40 minutes
ELASTOMER PROPERTIES
Shore Hardness: 80 + 5 shore A
100% Modulus: 1100 psi (ASTM D412)
300% Modulus: 2200 psi (ASTM D412)
Tensile Strength: 5000 psi (ASTM D412)
Elongation: 430% (ASTM D412)
Tear Strength (D-470 pli): 125 (ASTM D470)
Bashore Resilience: 42% (ASTM D2632)
Taber Abrasion: 68.6 (ASTM D4060)
(mg loss per 1000 cycles)
H-18 wheel on 1000g load
Rev.0