Description / Abstract: Material Description.

Materials covered by this specification are divided into three (3) types.

• Type A: Fluorocarbon Rubber (FKM) Color code: black.

• Type B: Fluorosilicone Rubber (FVMQ) Color code: blue.

• Type C: Drawing defined (e.g., using SAE J200 or ASTM D2000 line callout).

Symbols. Not applicable.

Applicability.

This specification covers the materials and performance of elastomeric O-rings used for tightening quick fittings of vacuum brake system.