Oatey 31431 Pipe Thread Sealant Blue Brush Top 16 Oz

Product Description

The OATEY 31431 is a blue, non-hardening pipe thread sealant supplied in a 16 oz brush-top can. Formulated with PTFE, it seals and lubricates threaded pipe connections to prevent leaks and make future disassembly easier. The fast-drying formula is engineered for high-vibration environments, including refrigeration and compressor systems, where standard thread compounds can loosen or fail over time. It also functions as a positive lock and seal on threaded fasteners. Licensed plumbers, pipefitters, and refrigeration technicians rely on this product for reliable sealing across a wide range of pipe materials and service conditions.

This sealant is suited for residential and commercial plumbing, refrigeration piping, and compressed-air systems. The brush-top applicator allows controlled, even coverage on pipe threads before assembly. It is approved for use on galvanized steel, iron, brass, copper, aluminum, stainless steel, PVC, polyethylene, and reinforced fiberglass pipe. Its NSF certification makes it appropriate for potable water systems where code compliance is required. The non-hardening cure type keeps connections serviceable for future maintenance or modification.

Key Features

• PTFE-fortified formula improves thread sealing and reduces friction for easier break-out
• Non-hardening cure keeps joints serviceable and removable after application
• Fast-drying compound suited for high-vibration refrigeration and compressor environments
• Brush-top 16 oz can provides controlled, mess-free application on pipe threads
• NSF certified and meets CSA and UPC standards for broad code compliance
• Works as a positive lock and seal on threaded fasteners in addition to pipe joints

Compatibility

Designed for use on pipe made of galvanized steel, iron, brass, copper, aluminum, stainless steel, PVC, polyethylene, and reinforced fiberglass.

Installation Notes

Applied by licensed plumbers, pipefitters, or refrigeration technicians working with threaded pipe systems. Before applying, ensure pipe threads are clean, dry, and free of old sealant or debris. Apply an even coat to the male threads, then assemble the joint hand-tight before final wrench makeup. Follow applicable local plumbing codes, including IPC and IFGC requirements, when using on gas or potable water piping.