Nitrile butadiene rubber (NBR) is a copolymer made of acrylonitrile and butadiene monomer polymerization, mainly produced by low temperature emulsion polymerization, It has excellent oil resistance, high wear resistance, good heat resistance, strong adhesion. Its disadvantages are poor low temperatu
FKM O-Ring installation requires careful handling because fluorocarbon elastomers offer excellent chemical and heat resistance but are more vulnerable to stretching, twisting, cutting, and improper assembly. This guide explains the most common FKM O-Ring installation mistakes, including poor groove preparation, incorrect sizing, excessive stretching, incompatible lubricants, improper tools, and inadequate post-installation inspection. It also provides practical installation best practices, such as material verification, controlled lubrication, proper tooling, pressure testing, and standardized procedures, helping technicians reduce seal damage, prevent leaks, and improve long-term sealing reliability.
This O-Ring compression guide explains how proper squeeze, stretch, and gland design help create reliable seals in static and dynamic applications. It covers recommended O-Ring compression ranges, ID stretch limits, cross-sectional reduction, gland fill, high-pressure sealing, and the effects of temperature and material hardness. Readers will also learn how to prevent common problems such as leakage, extrusion, excessive friction, compression set, and installation damage. By balancing O-Ring compression and stretch with operating conditions, engineers can improve sealing performance, extend service life, and reduce premature seal failure.
