Framework oil seal

Framework oil seal

Introduction to framework oil seal

The skeleton oil seal is the most commonly used representative seal in the rotating shaft.skeleton oil seal is a versatile and innovative sealing solution for rotary shafts, offering unparalleled efficiency, reliability, and innovation. Its intricate architecture, consisting of the oil seal rubber elastic body, reinforced skeleton, and self-tightening spring, ensures a holistic sealing solution that effectively keeps contaminants at bay while preserving essential fluids. The rubber elastic body acts as a barrier and accommodates the rotary movement of the shaft, maintaining a seamless connection while upholding its sealing duty. The strategic “interference” design, where the inner diameter is smaller than the shaft, results in controlled “interference” that imparts exceptional sealing performance. NBR nitrile, the epitome of excellence, is the most commonly used choice for skeleton oil seals, offering exceptional resistance to mineral oils and wear, making it a versatile and reliable choice across various industries. The skeleton oil seal’s seamless blend of functionality and innovation makes it an indispensable component in various sectors, contributing to the smooth operation, reliability, and efficiency of machinery and systems.

framework oil seal is composed of three parts, respectively, oil seal rubber elastomer, reinforced skeleton, self-tightening spring, rubber elastomer by the bottom, waist, cutting edge and seal lip composition, usually, the actual size of the skeleton oil seal inner diameter will be smaller than the shaft diameter, with a certain “interference” so that the skeleton oil seal has sealing performance. NBR NBR framework oil seal is the most cost-effective oil seal and the most commonly used framework oil sealde material, NBR NBR framework oil seal has excellent mineral oil resistance and wear resistance.

Characteristics of framework oil seal

Simple structure, small size, low cost, easy maintenance, small torque resistance, both to prevent the leakage of the medium, but also to prevent the invasion of external dust and other harmful substances, and wear has a certain compensation ability, but not resistant to high pressure, so generally used in low-pressure occasions of chemical pumps. With the continuous development of industrial machinery technology, the liquid that needs to be sealed, in addition to oil, also needs to prevent the leakage of water and chemical media, and also needs to prevent the external dust and sand from invading the machinery from the outside.

Main performance of framework oil seal

1, the framework oil seal material HNBR can be used for a long time in the working environment of -40~ +180 degrees, good processing performance, high strength, excellent wear resistance, small permanent deformation, and has a unique ozone resistance and hydrogen sulfide resistance.

2, although hydrogenated butadiene rubber is hydrogenated and saturated, it still maintains the characteristics of the original butadiene. It has tensile crystallization, so the strength is high.

3, has good heat and ozone resistance, weather aging resistance and chemical acid and alkali resistance.

4, good resistance to swelling of technical liquids (including oils containing corrosive additives)

5, good mechanical properties, even under temperature rise conditions still maintain a considerable level.

6, in extremely harmful conditions, has significant wear resistance.

7. The tensile strength of vulcanized rubber is higher than that of butadiene rubber and neoprene rubber, which is close to higher than that of antelope butadiene rubber.

8, excellent acid (hydrogen sulfide) environment and resistance to amine/oil mixture, as well as oxidation fuel and lubricating oil resistance.

framework oil seal How to seal oil effect

The use of framework oil seal should pay attention to the following matters: receiving a fixed number of oil seals, from receiving the oil seal to assembly, must be kept clean, do a machining inspection procedure before assembly, measure whether the dimensions of the cavity and shaft are correct, and do not tear the wrapping paper too early before installation of the framework oil seal. Prevent debris attached to the surface of the oil seal and brought into the work. Let’s wait. The attention of these matters has a very significant impact on the skeleton oil seal. As an elastomer seal, the section shape of the oil seal and the tight spring arrow make the lip to the shaft have better follow-compensation performance, so as to obtain a good sealing effect with a small lip diameter force.