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Pipe Caps & Plugs

At StockCap, you’ll find everything from plastic plugs for NPT threaded pipes to large diameter vinyl flange covers. Here are some of our more popular pipe caps and plugs.

Standard Vinyl Pipe End Caps and Pipe End Plugs

The major benefit to using vinyl caps and plugs for protecting pipe threads is the flexible vinyl material. It stretches to fit over threads and provides a tight seal against contamination while still being simple to install. And, unlike the harder plastic caps, vinyl will not crack, shred, or split.

Pipe End Caps Pipe End Plugs

Threaded Pipe Caps and Threaded Plugs

Threaded pipe caps and plugs are ideal for applications where fear of displacement due to internal air pressure exists. The pipe caps are available to fit the most popular ASAE thread sizes while the pipe plugs fit on common JIC fittings.

Standard Polyethylene Caps and Plugs

Polyethylene caps and plugs function well as low cost pipe end caps or plugs. StockCap offers over 150 different sizes and with the tapered plugs functioning as both caps and plugs, there is a cap or plug for just about every application.

EZ Removal Pipe Caps

These pipe end caps are great for use as shipping caps that will eventually have to be removed. All caps are designed with ergonomic tabs to make removal quick and easy. They are perfect for use on high volume assembly line components.

Flange Covers

For pipe flanges, StockCap offers a full line of vinyl flange protectors. Made from a flexible but durable vinyl, these covers protect the full face of the flange as well as the body of the flange itself.

To request a sample or pricing on any of our protective pipe caps or plugs, please visit the product page or click below.

StockCap manufacturers numerous styles of plastic pipe caps and pipe plugs. Shop our stock products online or request a quote.

Pipe Cap

Pipe caps act as protective device and are designed to protect pipe ends of various shapes. The main purpose of using pipe caps is to waterproof the connections. They are also used to close the the ends of hydraulic or pneumatic pipes and tubes. They are used in the plumbing apparatus of domestic, commercial and industrial water supply lines, machinery and processing equipment etc. They are also fitted on water pump lines with the sole purpose of removing air blocks. Pipe caps are highly demanded as an important category of pipe fittings.

Buying Tips
Threaded Caps:

These caps are female threaded. The thread can be either straight or tapered, also referred as NPT. Generally, caps have a female thread and plugs have a male thread.

Tapered Caps:

These caps have tapered sides, which offers a close fit. Some of these fittings can be used either as a cap or a plug. Tapered caps and plugs are multi-functional and go well with male and female NPT threads, straight tubes and bars; and male straight threads. These fittings have a tapered body to provide a secure and firm friction fit while facilitating easy removal. The tapered caps are designed to provide protection for all internal and external, threaded and non-threaded fittings against damage, dirt or moisture that can occur.

Anti-roll Caps:

These caps are round in shape with a slightly square end. This prevents pipes and tubes from rolling.

Pipe Cap Pipe caps act as protective device and are designed to protect pipe ends of various shapes. The main purpose of using pipe caps is to waterproof the connections. They are also used to ]]>