Steel and Plastic
Fittings Guide

Fittings come in a variety of sizes and styles. Whether you need a cap, plug, spout or bung, Pipeline Packaging will have what you need. Often, 2” and ¾” fittings are used for drums and pails. Made from a variety of materials including steel, zinc, nylon and polyethylene, the product you need to package and how you plan to ship your material will determine the best fitting to meet your needs.

Nylon & Plastic

Nylon and plastic fittings are often used with flammable materials. Designed to melt when exposed to high temperatures, the nylon fitting will prevent pressure from building within a container which could cause an explosion. Specialty microporous and rubber vents are available to ensure your container is breathable.

Steel

2” & ¾” steel fittings are available with a variety of gaskets and coatings to ensure compatibility with your product. The use of this type of fitting also allows the total package to achieve a high UN rating.

Stainless Steel

If you are packaging foods, flavorings, specialty chemicals or products requiring a high purity rate then stainless steel fittings are a good choice. Available to fit small pails and large drums, this type of fitting is available with a variety of gasket options.

Zinc

Zinc fittings are used when your products require no contact with iron.

Pour Spouts

Offered in a metal & plastic hybrid or all-plastic form, the pour spout is often seen in smaller capacity pails which are lifted to dispense product. An integrated tamper-evident feature provides a plastic pull ring which is removed before a plastic spout is pulled up from the pail to pour. The spout can easily be pushed back into the flange and resealed with the provided over the cap to prevent contamination of the product.

Flanges

Flanges are the closure attachments that permanently insert into steel drums and pails. They provide the receiving threads for a fitting. Most steel drums have NPT (National Pipe Thread Taper) or NPS (National Pipe Standard) threaded openings. These differ from straight pipe threading in that they pull tight for liquid-tight seals.

Cap Seals

To secure drums during shipping, cap seals are used to sit on top of the fittings. Once a container is filled with your product and the fitting torqued to manufacturer specifications, and the cap is often applied to provide tamper-evident protection. Cap seals are crimped over the fittings and can be unscrewed only by breaking the seal over the cap.

We offer more over-cap options than are shown here. For a complete list of fitting options please contact us.

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¾” Zinc Plated Metal Plug

Made from premium steel, the zinc-plated metal plugs are noted for perfect balance, uniform dimensions, and high-quality finish.

¾” Steel Plug

The steel plug has rounded bottoms and wide shoulders with concentric sealing beads to help lock gaskets securely into place.

¾” Plastic Plug

Plastic plugs are the choice for offering strong, reliable protection for your product while providing pressure relief during a fire incident. They are tamper-evident when used with plastic over caps.

This fitting is available with a variety of gaskets.

2" Plastic Over Cap

The all-plastic drum closure over cap is designed to protect from dirt, contamination, and tampering.

2” Metal Dust Cover

The 2" metal dust cover is primarily used for protection from particulates during transit and storage of unfilled containers.

2” Steel Plug Zinc Plated

Made from premium deep-drawing quality steel, the zinc-plated metal plugs are noted for perfect balance, uniform dimensions, and a high-quality finish.

2” Steel Plug

The metal plug has easy-grip features that allow for easy installation or removal.

This fitting is available with a variety of linings and gaskets.

2” Nylon Plug

The nylon plug is available with a variety of vent and gasket options while providing pressure relief during a fire incident. They are tamper-evident when used with plastic over caps.

2" Plastic Plug

Plastic plugs are the choice for offering strong, reliable protection for your product while providing pressure relief during a fire incident. They are tamper-evident when used with plastic over caps.

This fitting is available with either Poly Irradiated and Black Buna Gaskets.

Self-Venting Pour Spout

The self-venting spout is double-bailed for easy removal, has a pullout diaphragm for added protection, and is tamper-evident with a pull-tab seal.

STOLZ

Stolz closures have a built-in, pull-out tamper-evident seal made from chemically resistant polyethylene. They are ideal for tinting, mixing, and dispensing products.

Learn the specifications and features here.