Gasket and method of manufacturing the gasket

Details Gasket and method of manufacturing the gasket Gasket and method of manufacturing the gasket

2006-09-26

2006-09-26

Lucchesi, Nicholas D. (Department: 3763)

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

C604S230000

Reexamination Certificate

active

07111848

ABSTRACT:
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 Ra1and a surface roughness of the resin film on the gasket body side is defined as Ra2, a relationship of 1.5 Ra1≦Ra2is satisfied.

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