Sealing material
AssigneeNippon Oil Seal Industry Co., Ltd.
InventorsFumio Hiramatsu, Kenichi Ohsone, Tatsuaki Yukimasa
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Abstract
There is provided a sealing material comprising 100 parts by weight of a fibrous material made of polyester, polyamide or the like which constitutes a non-woven cloth; and 10 to 150 parts by weight, based on the weight after dried and hardened, of one or a mixture of a styrene-butadiene polymer base latex, an acrylonitrile-butadiene polymer base latex, an acrylic ester polymer base latex, a polysiloxane base latex and/or a fluorine-contained rubber base latex impregnated in the fibrous material.
Claims7
A sealing material for a dust lip extending from a base portion of a main lip of a rubber oil seal comprising a non-woven cloth impregnated with a latex, wherein 100 parts by weight of a fibrous material constituting said non-woven cloth is impregnated with 10 to 150 parts by weight of said latex when weighed after dried and hardened, said material having a permeability of more than 5 cc per cm.sup.2.Sec.
Dependencies are inferred from the claim text.