These gaskets are used on Dresser's Style 90 Compression Fittings. Gaskets below are Armored 27 Buna S.

Style 90 Dresser Spec Sheet

Gasket Grade: Having a wide range of applications, 27 Buna S Armored Gasket is accepted as standard for most pipeline use. It is recommended for use on both fresh water and salt water lines, natural and other gases, air, most acids, alkaline and sugar solutions and some refrigerants.

Armor: This can be used to great advantage where low electrical-resistant joints are desired. The armor bites into the pipe providing metal to metal contact allowing easy passage of current where cathodic protection is a necessity.

Temperature: up to 212 ° F