14638 plastic thread caps products are offered for sale by suppliers on Alibaba.com, of which lids, bottle caps & closures accounts for 9%, pipe fittings accounts for 5%.
A wide variety of plastic thread caps options are available to you, such as pvc, plastic and silicone.You can also choose from waterproof, pilfer-proof and non spill plastic thread caps,as well as from iso plastic thread capsand whether plastic thread caps is injection molding, or pipe.