M83248 series o-rings are flurocarbon rubber o-rings. Flurocarbon rubber is commonly known as Viton. It is an advanced rubber that has extremely good fuel and heat resistance and is ideally suited for aircraft fuel system applications.
Fluid and Compression Resistant
Thickness: 0.103 in.
Inner Diameter: 0.549 in.
Industry Standard Specification: MIL-R-83248/1