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“The Ultimate In Plastic Caps & Plastic Plugs”

Smithco carries many styles and sizes of plastic plugs.  The styles are Socketweld plugs, NPT push-in plugs, NPT thread-in plugs, Flared fitting plugs, JIC push-in / push-on caps and plugs, JIC threaded caps, and Tapered plugs for various uses.  These plugs are available in bags of 100, up to case quantity.  All of these styles of plugs are made from polyethylene plastic in various colors.

Socket weld plugs: 

These plugs come in red.  Specifically designed for close fit socket weld applications, the plug provides maximum protection. 

Plugs come in sizes 1/4"-2" and are a stock item.

Click "here" for Socket Weld Plugs cutsheet

NPT push-in plugs:

These plugs come in blue.  They come in sizes 1/8"-6" and are a stock item.  Sizes 1/8"-2" feature pull rings for ease of removal.  These tapered style polyethylene plugs have built-in lift rings for easy installation and removal, resulting in reduced product damage and increased cost savings. New patented design lays flat, resulting in more efficient packaging.
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Click "here" for NPT push-in plugs cutsheet

NPT thread-in plugs:

These plugs come in black and are high density plastic.  They feature a square head top for ease of installation and removal.  Ideal for low-pressure testing and in-house handling. Square-head design makes for easy application. Protects threaded ports against contaminants and moisture. Resists oil and heat up to 250°F. Not for permanent applications.

Plug sizes range from 1/4"-2" and are a stock item.

Flared fitting plugs:

These plugs come in red.  They are threaded and screw into the fitting.  Plug sizes go up to 2" and are designed for use in flared fittings. Parts are knurled around the flange to aid in insertion and removal.

Available in thread sizes from 5/16" through 1-5/16" and are a stock item.

Click "here" for Flared fitting plugs cutsheet

JIC push-in / press-on caps and plugs:

These plugs come in red.  Excellent for protecting threads and to keep unwanted dirt and moisture out.

Plug sizes go up to 2" and are a stock item.

JIC threaded caps:

These caps come in red.  Knurled for ease of application, Series CD Caps seal flared JIC fittings exceptionally well against dirt and moisture, and are also used for masking during painting and plating. 

Caps are threaded and sizes go up to 2".  They are a stock item.

Tapered plugs for various uses:

These plugs come in red.  Plug sizes range from very tiny to 4.5"".  They are used to plug holes in a variety of materials.  Excellent for protecting threads and to keep unwanted dirt and moisture out of pipes, valves, tubing and most other cylindrical openings. 

Plugging diameters from .179 to 4.620.   They are a stock item.

Click "here" for Tapered plugs cutsheet

Please contact our customer service department for the specifications of the plastic caps and plastic plugs we carry.
We will be happy to Fax you the information.


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Smithco Industries: Safety Division

8918 Wayfarer Houston, TX 77075

Phone: (713) 947-8942
Fax: (713) 947-2165
sales@smithco.com