Silicone Grease NLGI#3 O-Ring & Valve Lubricant

Silicone Grease NLGI#3 O-Ring and Valve Lubricant (Silicone Compound) is an NLGI #3 (stiffest consistency) Silicone Grease, formulated with polydimethylsiloxane (CAS # 63148-62-9) and inert silica filler. The NLGI#3 rating is the stiffest silicone grease and used in applications where high vacuum and high pressure are present. Due to its ultra stiff consistency, it will not wash off easily, and is extremely tenacious in staying on the surface. If you require 100% silicone grease that is not as stiff, we offer the 3005 (NLGI#2).

Chemical Name: Polydimethylsiloxane Silicone Grease

Clearco Silicone Greases (Silicone Compounds) are formulated with 100% polydimethylsiloxane (CAS # 63148-62-9) and inert silica filler. They are used in a variety of applications that require: wide range of thermal stability, high dielectric strength, electrical insulation, inertness to rubber and plastic surfaces, and insulation against corrosion and moisture.

Silicone Greases are inert to virtually all substrates with the exception of silicone rubber. * They are often used for lubricating o-rings, gaskets, valves and seals as well as surfaces that require excellent lubricating properties over long periods without drying out. They are not recommended for metal-to-metal lubrication or on surfaces that will be painted or finished.

*Swelling may occur

Silicone Greases are available in 3-differeent consistencies: NLGI #1, NLGI#2 & NLGI#3. NLGI is a measure of the stiffness of silicone grease with NLGI 1 being the least stiff and NLGI 3 being the stiffest. The most widely used is the NLGI#2 (Silicone Grease 3005).

Unlike petroleum based greases, silicone greases offer wider service temperature ranges and are compatible with virtually all surfaces. Being composed of 100% silicone, they do not contain any petroleum distillates that can attack and dry out rubbers and plastics.