A history of ‘Thinking Plastic’ - Caps

StockCap is the global division of Sinclair & Rush specialising in dip and extrusion moulding caps and plugs and fully operative for both short and long run manufacture here in Kent.

The StockCap selection of vinyl products is extensive and economical. These products are used for applications ranging from high-temperature masking to decoration while ensuring low cost and a high rate of satisfaction. They are used to keep open ports free of contaminants; to protect delicate threads; and to finish product by covering rough edges, exposed bolts and pipe ends for protection and safety during shipping and storage.

With caps and plugs in a variety of styles, colours, and sizes, StockCap from Sinclair & Rush offers an affordable solution for your product protection needs.

A history of ‘Thinking Plastic’ - Caps

With over 60 pioneering years in the field of dip moulding, StockCap is proud to have contributed so greatly to the evolution of this unique manufacturing process. Originally used in the art of candle making, dip moulding has grown into a high-tech manufacturing method that competes head to head with other plastic and rubber moulding processes.

Injection moulded parts are often the best choice for complex, high volume products that require tight tolerances. The process involves injecting plastic raw material at high pressure into a cavity that is designed to replicate the shape of the finished product.

What is ‘dip moulding’?

In its basic form, dip moulding involves the heating of a metal mould with the internal dimensions of the desired part. These heated moulds are then immersed or "dipped" in a tank of liquid plastisol (PVC). The heat from the mould attracts the cool plastisol and the part is formed. The moulds are extracted from the liquid and heat cured. After the parts are cured, they are cooled, stripped from the moulds, and packed for shipment or secondary operation.

Benefits of Dip Moulded Caps:

Caps of varying lengths can be made with no tooling charge.

Vinyl material stretches to fit odd shapes and easily conforms to beaded or flared tubes.

Vinyl material will not crack or split like Low Density Polyethylene.

Vinyl material does not shred when capping or plugging threaded items.

Perfect for high temp applications:

Vinyl Caps are resistant to +220˚C for short periods of time, making them ideal for use on powder coating & paint spraying where the application of heat is involved. The flexibility of the vinyl material makes it easy to fit irregular tubular shapes. They are quick to apply and easy to remove – even from those awkward places. If it is a particularly difficult spot you need to protect, try using our Grab Tab Caps (left & right above).

What is the best way to measure the cap spec.?

James from Component Force – our component stock and distribution division, will explain how to measure your tube for cap fitting if you click the video link:

The types of Caps that we can supply, many in stock ready for next day delivery, include: Plastic Caps, Vinyl Caps, Rubber Caps, Round Caps, Nut Caps, Square Caps, Rectangular Caps, Flanged Safety Caps, Threaded Caps, Grab Tab Caps, Pull Tab Caps, I-Beam Caps, Stud Protection Caps, EPDM Rubber Caps, Silicone Rubber Caps, USB Caps, Heat Shrink Caps, High Temperature Caps, Hanger Caps, Flange Covers, Angle Caps, Hexagonal Caps, Custom Caps and many more.

Find out more about StockCap caps and plugs by reading our on-line flip-book – click here.

Call us today for advice, to order or simply to request your FREE sample bag: 01634 686 504.

Or click on the Shop Now button below to shop on-line now:

01634 686 504