Standard Radolid® Protection Caps are manufactured of low density black UV-resistant polyethylene that withstands temperatures of -84 °F to +210 °F. They are also resistant to water, brine, hydraulic fluid, diesel, greases, gasoline, hydrochloric acid concentrate, sulphuric acid to 40%, nitric acid to 40%, ammonia, and acetum. Further resistance properties can be given upon request.
Standard Radolid® Protective Caps are black, but they are also available in clear, white, red, grey, silver and other colors on request. The different types manufactured include:
Our caps are sized to fit heavy hex nuts only; they will not fit finished nuts properly. Radolid® Protection Caps are manufactured in sizes to fit 1/4 inch to 3 3/4 inch diameter bolts or studs. High temperature material of Polyamid A4H for use up to +430 °F is available.