Viton® A-275C

Category: Fluorelastomer , Fluoroelastomer
Manufacturer: DuPont Performance Elastomers
Trademark: Viton®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: FExMGl_Viton-A-275C.pdf
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Viton A-275C is a nominal 20 ML, curativecontaining precompound formulated specifically for optimized performance in injection molding operations. The polymer rheology and cure rate are designed to provide the best possible mold flow and filling characteristics, while maintaining economically fast overall cycle times. In injection molding applications, compounds based on Viton A-275C will provide improved mold flow, better mold release, and superior flash strength, compared to other grades of Viton, such as A-201C or A-401C.

Viton A-275C features:
-Incorporated bisphenol cure system
-Viscosity, rheology, and cure/scorch optimized for injection molding
-Excellent scorch safety
-Excellent mold release
-Excellent compression set resistance

Applications:
-Injection molding of O-rings, gaskets, and other
sealing devices
-Can be formulated to meet FKM specifications
MIL-R-83248C and AMS 7276E
General Information
Features
  • Low compressive deformability
  • Fast molding cycle
  • Good demoulding performance
Uses
  • Washer
  • Seals
Appearance
  • White
Forms
  • Sheet
Processing Method
  • Injection molding
PhysicalNominal ValueUnitTest Method
Specific Gravity 1.82g/cm³ASTM D792
HardnessNominal ValueUnitTest Method
Durometer Hardness (Shore A)71ASTM D2240
ElastomersNominal ValueUnitTest Method
Tensile Stress (100% Strain)4.50MPaASTM D412
Tensile Strength (Break)13.4MPaASTM D412
Tensile Elongation (Break)220%ASTM D412
Compression Set ASTM D395B
    23°C, 70 hr 11%ASTM D395B
    200°C, 70 hr 18%ASTM D395B
    200°C, 168 hr 24%ASTM D395B
    200°C, 336 hr 34%ASTM D395B
    232°C, 70 hr 36%ASTM D395B
AgingNominal ValueUnitTest Method
Change in Tensile Strength in Air ASTM D573
    200°C, 70 hr 0.0%ASTM D573
    100% strain, 200°C, 70 hr 2.2%ASTM D573
    232°C, 70 hr 4.3%ASTM D573
    100% strain, 232°C, 70 hr 0.0%ASTM D573
    275°C, 70 hr -30%ASTM D573
    100% strain, 275°C, 70 hr -41%ASTM D573
Change in Ultimate Elongation in Air ASTM D573
    200°C, 70 hr 10%ASTM D573
    232°C, 70 hr 4.3%ASTM D573
    275°C, 70 hr 25%ASTM D573
Change in Durometer Hardness in Air ASTM D573
    Support a, 200°C, 70 hr 1.0ASTM D573
    Support a, 232°C, 70 hr 1.0ASTM D573
    Support a, 275°C, 70 hr 2.0ASTM D573
Change in Tensile Strength ASTM D471
    23°C, 70 hr, in reference fuel C -17%ASTM D471
    100% strain, 23°C, 70 hr, in reference fuel c -18%ASTM D471
    150°C, 168 hr, in IRM 903 oil -5.5%ASTM D471
    100% strain, 150°C, 168 hr, in IRM 903 oil -4.7%ASTM D471
    175°C, 70 hr, in AMS3021 -37%ASTM D471
    100% strain, 175°C, 70 hr, in AMS3021 -29%ASTM D471
Change in Ultimate Elongation ASTM D471
    23°C, 70 hr, in reference fuel C 15%ASTM D471
    150°C, 168 hr, in IRM 903 oil 15%ASTM D471
    175°C, 70 hr, in AMS3021 4.4%ASTM D471
Change in Durometer Hardness ASTM D471
    Support A, 23°C, 70 hr, in reference fuel C -1.0ASTM D471
    Support A, 150°C, 168 hr, in IRM 903 oil -1.0ASTM D471
    Support A, 175°C, 70 hr, in AMS3021 -8.0ASTM D471
Change in Volume ASTM D471
    23°C, 70 hr, Class C Standard Fuel 2.2%ASTM D471
    150°C, 168 hr, in IRM 903 oil 1.8%ASTM D471
    175°C, 70 hr, in AMS3021 15%ASTM D471
Additional Information
ODR at 177°C, Microdie, 3° Arc, 12 min motor:Minimum Torque, ML: 8.7 in-lbScorch Time, ts2: 2.7 minMaximum Torque, MH: 94.2 in-lbOptimum Cure Time, tc90: 4.9 minMDR at 177°C, Microdie, 3° Arc, 12 min motor:Minimum Torque, ML: 0.79 in-lbScorch Time, ts2: 1.39 minMaximum Torque, MH: 17.75 in-lbOptimum Cure Time, tc90: 2.56 min
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