Snowshoe cat very vocal, though their voices are not as loud as the Siamese, a cat found in their breed heritage. They are noted as being very intelligent and have the ability to learn tricks and open doors. These cats also enjoy water, and may swim. In the 1960s, a cat, owned by Siamese cat breeder Dorothy Hinds-Daugherty, produced a litter of Siamese kittens in Philadelphia, Pennsylvania. Three of the kittens had unique markings, consisting of white points and feet. Intrigued by their looks, she began working to breed cats like them, using seal point Siamese with bicolor American Shorthairs. The offspring
Radial shaft seal point contact with the shaft. The point contact is formed by two angles, with the air side angle usually less than the oil side angle. Depending on the seal type these two angles are varied to create a pressure distribution at the seal contact point which has a steeper slope on the oil side of the seal. The shallower the slope on the oil side of the seal the wetter the seal will run. The spring is positioned such that axially the centerline of the spring is biased to the air side of the lip contact point. In order to