Terumo Kabushiki Kaisha

Kokoku Intech Co., Ltd.

Hiroyuki Yunoki

Yutaka Kikuchi

Kouichi Tachikawa

A gasket is capable of providing an excellent slidabiity and holding its sealability without applying lubricant and a gasket that can prevent a resin film from being peeled off of a gasket body and prevent the generation of a molding defect such as pinholes. The gasket can be installed slidably in a outer tube of a syringe, including a gasket body and a resin film formed of a material lower in coefficient of friction than a material of the gasket body, which covers at least an outer periphery of the gasket body, in which when a surface roughness of the resin film on the outer tube side is defined as Raand a surface roughness of the resin film on the gasket body side is defined as Ra, a relationship of 1.5 Ra&#x2266;Rais satisfied.

Growing community of inventors

Yamanashi, Japan

Hiroyuki Yunoki