Another advantage of fine thread collated drywall screws is their strength and durability. These screws are made from high-quality materials such as carbon steel or stainless steel, which ensures they can withstand the weight and pressure of the drywall without bending or breaking These screws are made from high-quality materials such as carbon steel or stainless steel, which ensures they can withstand the weight and pressure of the drywall without bending or breaking

Silicone
Wide temperature range
Commonly used in low temperature applications
Very prone to mechanical damage during fitting
Oil seals are available in an immense range of sizes, for shafts from a few millimetres to several metres. Once the shaft diameter, groove diameter (housing diameter) and groove width are known, selecting an appropriate oil seal is a simple task. An oil seal or its product description is usually associated with three dimensions, for example 6x15x4. These refer to the sizes of the hardware for which the oil seal is designed. In this example, this oil seal is suitable for: 6-mm shaft diameter x 15-mm groove diameter x 4-mm minimum groove width.
There is a British Standard laid down for the control of synthetic rubbers. BS 3574 (1989) helps to determine shelf life – for instance, Nitrile (NBR) and Polyacrylic (ACM) are Group ‘B’ rubbers and have a 7-year life, whilst Silicone (VMQ) and Fluoroelastomers (Viton®) are Group ‘C’ rubbers and have a 10-year shelf life. PTFE and Leather do not come into this category but like the others should be kept in the original packing for as long as possible away from direct light, dust, and humidity. Ozone, which can also be produced by battery-driven forklift trucks has a very bad effect on synthetic rubbers. Finally, protect the sealing lip – DO NOT hang the seals on nails, wire etc.
Applications of Oil Seals
Compounds for Automotive Power Train Systems
