316 7/8 Inch X 1-1/4 Inch X 3/16 Inch 75 Durometer Viton O-Ring- Brown F436 STRUCT WASHER HDG 1/2"

F436 STRUCT WASHER HDG 1/2"

The Proflex Standard Back Support made of durable 280D spandex body material to guarantee comfortable ergonomic support

This welding helmet is designed with a flip front lense

Sanitary Sealed refill helps lock out germs

316 7/8 Inch X 1-1/4 Inch X 3/16 Inch 75 Durometer Viton O-Ring- Brown F436 STRUCT WASHER HDG 1/2"Excellent mechanical and physical properties. Good resistance to petroleum products low compression set and high temperature resistance. Wide spectrum of chemical compatibility. Good for vacuum service and low gas permeability. Temperature range: 15 to +400F (limited exposures to higher temperatures).