Elastic compounds

Group R Compounds

SBR: styrene-butadiene

Commercial names: Buna Hüls (Chem. Werke Hüls), Buna S (Buna-Werk), Phioflex (Goodyear), Phiolite (Goodyear).
Styrene-butadiene rubber presents many variations of behaviour according to the loads that are added to the compound prior to the vulcanisation process. The most widely used variant in seal applications, it consents contact with glycol-based fluids, with a fairly stable behaviour for temperature intervals falling between 100°C and –50°C.

Temperature table

Maximum temperature

Minimum temperature

100°C

-50°C

Fluid compatibility table

Compatible

No compatible

Silicone oils and greases
Fluids for refrigeration
Glycol based fluids
Diluted acid, base and salt solutions

Mineral oils
Aliphatic, aromatic and chlorinated hydrocarbons
Oxygen, Ozone and oxidative agents

The Elastotech code for this compound is: ME04XX/YY.

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Introduction
List of names
Principal compounds
Operating conditions and contact fluids
Rainbow C recognition system
Detailed panorama on some compounds of O-rings
Principal table of the compounds