Patent ID: 7022389
Filing Date: 2006-04-04
Classification: C08K,C08L,F16L,Y10T

Abstract:
1. A method for improving the airtightness of a hydraulic or pneumatic device comprising: providing a hydraulic or pneumatic tube comprising a polyamide resin composition comprising: (A) from 70 to 97% by weight, based on the weight of the polyamide resin composition, of a polyamide resin and (B) from 3 to 30% by weight, based on the weight of the polyamide resin composition, of a plasticizer comprising an ester of at least one of p-hydroxybenzoic acid and o-hydroxybenzoic acid with a C combining the tube with at least one clamping part containing a component comprising a rubber compound comprising a polar rubber as a main ingredient, wherein the component comprising a rubber compound is used as a sealing material in the clamping part.