• Buna-N resists wear and tear and is often used with petroleum-based chemicals, fluids, and alcohols. Also called nitrile, this material is used in a wide range of sealing applications.
• Hytrel® is a thermoplastic polyester elastomer (TPE) that resists abrasion, high temperatures, and hydraulic oil and water. It is flexible and provides a strong seal.
• PTFE resists acids, ammonia, petroleum products, synthetic lubricants, coolants, and chemicals. This material is durable and rigid and often used with aggressive and corrosive materials.

The pressure rating of the flange the gasket is intended for (e.g., 150#, 300#) — defines compatibility with flange systems.

The substance the product is made from — chosen based on application requirements like durability, temperature, pressure, or chemical/corrosion resistance.

Unit of Measure

The nominal size of the product, typically indicating dimensions (width x length) or the diameter of the hose that a coupling fits.