MIL-R-83248 FLUOROELASTOMER VITON

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RUBBER, FLUOROCARBON ELASTOMER, HIGH TEMPERATURE,FLUID, AND COMPRESSION SET RESISTANT


This specification covers high temperature, compression set, and fluid resistant fluorocarbon elastomer
sheets, strips, molded parts, and extruded shapes for aeronautical and aerospace applications.

    Types The synthetic rubber types shall consist of the following:

  • Type I: O–rings, compression seals, molded–in–place gaskets, and molded o–ring cord
  • Type II: Molded parts (other than type I), sheets, strips, and extruded shapes
    Classes. The synthetic rubber classes shall be designated as follows:

  • Class 1: 75 ± 5 hardness
  • Class 2: 90 ± 5 hardness
RFQ – Molded Rubber Products
RFQ – Sheeting & Mixed Goods
RFQ – Cable Jacketing & Extrusion
OriginalClass 1 (75 hardness)Class 2 (90 hardness)
Tensile strength, psi, min 16001600
Elongation, %, min. 125100
Hardness, points 75 ± 5 90 ± 5
Specific, gravity As determined As determined
Temperature retraction, 10% (TR–10) °F, max. 55
Air age 70 hours @ 518°F ± 5°F
Tensile strength decrease, %, max. 3545
Elongation decrease, %, max. 1520
Hardness change, points +10, –5 +10, –5
Weight loss, %, max. 1010
Air age 22 hours @ 392°F ± 5°F
Compression set, % of original deflection, max. 1525
Air age 336 hours @ 392°F +5°F
Compression set, % of original deflection, max 4565
Oil age 70 hours @ 392°F ± 5°F in
ARM 200
Tensile strength decrease, %, max. 3535
Elongation decrease, %, max. 2020
Hardness change, points +0, –15 +0, –15
Volume change, % +1 to +25 +1 to +25
Compression set, % of original
deflection, max. 2025
Fuel age 70 hours @ 75°F ± 5°F in
ASTM Reference Fuel B (ASTM D471)
Tensile strength decrease, %, max. 2020
Elongation decrease, %, max. 2020
Hardness change, points ±5 ±5
Volume change, % +0 to +5 +0 to +5