Added three days because combined synopsis solicitation wasnt attached. 3 complete drum kits of 870 slow Black urethane casting resin and 1 complete drum kit of 870 slow Tan - These urethane kits are semi-rigid plastic with some flexibility that is strong and tough. Originally developed for high impact tooling, this product also offers abrasion and chemical resistance. It is ideal for a variety of industrial applications and fabrication of military training aids. Each of the three kits consists of two 55-gallon drums (Part A and Part B). The mixed resin is low in viscosity and does not require vacuum degassing. Technical Overview of the 3 870 slow black kits: Mix Ratio: 100A : 60B by weight; Mixed Viscosity cps.: 3,500 (ASTM D-2393); Specific Gravity, g/cc: 1.08 (ASTM D-1475); Specific Volume, cu. in./lb.: 26 (ASTM D-1475); Pot Life: 20 minutes @ 73�F / 23�C (ASTM D-2471); Handling Time: 4 hours @73�F / 23�C, depending on mass: Full Cure: 48 hours @ 73�F/23�C or 6 hours @150�F/60�C, depending on mass; Color: Black; Shore D Hardness: 63 (ASTM D-2240); Die C Tear Strength, pli: 488 (ASTM D-624); Ultimate Tensile, psi: 4,280 (ASTM D-638); Elongation @ Break: 400% (ASTM D-638); Shrinkage, in./in.: 0.001 (ASTM D-2566); Heat Distortion Temperature: 150�F / 60�C; Izod Impact Resistance (ft*lb/in): 16.1. Shipping with Lead Time of 30 days or less for the first 2 complete Black kits. The 1 remaining black kit shall be shipped 30 days after the first shipment of black kits. In addition to the Black kits, 1 complete kit of 870 slow Tan urethane casting resin 1 Tan kit consists of two 55-gallon drums (Part A and Part B). Technical Overview of the 1 kit of 870 slow Tan: Mix Ratio: 100A : 60B by weight; Mixed Viscosity cps.: 3,500 (ASTM D-2393); Specific Gravity, g/cc: 1.08 (ASTM D-1475); Specific Volume, cu. in./lb.: 26 (ASTM D-1475); Pot Life: 20 minutes @ 73�F / 23�C (ASTM D-2471); Handling Time: 4 hours @73�F / 23�C, depending on mass: Full Cure: 48 hours @ 73�F/23�C or 6 hours @150�F/60�C, depending on mass; Color: Tan; Shore D Hardness: 63 (ASTM D-2240); Die C Tear Strength, pli: 488 (ASTM D-624); Ultimate Tensile, psi: 4,280 (ASTM D-638); Elongation @ Break: 400% (ASTM D-638); Shrinkage, in./in.: 0.001 (ASTM D-2566); Heat Distortion Temperature: 150�F / 60�C; Izod Impact Resistance (ft*lb/in): 16.1. the 1 kit of Tan color shall be shipped in 30 days or less. All kits must be compatible with any brand of mold release. Material that does not cure properly must be replaced by the vendor at no cost to the government.