Quartz is the second most common mineral in the earth's continental crust. It is made up of a lattice of silica tetrahedral. It is also the most varied in terms of varieties, colors, and forms. This variety comes about because of the abundance and widespread distribution of quartz. It has a hardness of 7 on the Mohs scale and a density and of 2.65 g/cm3.

Rectangular connector caps are designed for protection of electronic pin connectors. These are typically constructed of vinyl polyethylene material.

Red oxide powder is widely available in nature. It is the basic mineral for steel plant. It has tremendous application in building, construction, paint and many other industries. For paint, ceramic, and building materials shade and tone red oxide is important. It is known for its corrosion protection, inertness to alkali and chemicals. Durability of paint made with red oxide is very well known. It is physically appeared as free flowing dry powder.

Rod Seal is the seal used in the hydraulic cylinder. The rod seal is the decisive factor for the function of the hydraulic cylinder. Rod seals are more rugged and are backed up with a wiper to wipe of dust from the piston rod as it enters the cylinder.

Rotary Seals are suitable for a wide range of temperature and pressure/velocity applications. Seal solutions include flange seal, insert seals and seals with metal locking devices. They feature high performance material, metal retaining ring designs and memory lip designs. Rotary Seals are designed to seal dynamic rotating motions. Some rotary seals are designed for dry-run, including rotary shaft seals and radial lip seals.