Founded in 1937, RectorSeal started as a manufacturer of specialty chemical sealants. One of our first products, RectorSeal Number 5, became a staple of the plumbing industry, becoming the most common thread sealant throughout the U.S. Since these beginnings, we have continued to grow by expanding our offering of chemical and mechanical products to support the tradesman in their work.

Our growth has centered around a simple mission: To provide innovative solutions to the professional trades. We want to help professionals in the heating & cooling, plumbing, electrical and construction industries perform their work faster and with greater reliability.

Today, we have developed a robust line of chemical, mechanical and firestopping products. These products are distributed through an extensive wholesale distribution network serving the plumbing, industrial, HVAC-Refrigeration, construction, electrical, and hardware market places. Our primary products include thread sealants, firestopping sealants, plastic pipe cements, anti-seize compounds, fluxes, lubricants, chemical cleaners, duct sealants, leak locators, and other specialized products. Many of these products have built a strong following among contractors due to their differentiated performance and from being the first to tackle challenges faced by the professional trade.

RectorSeal is a member of CSW Industrials. (CSWI: NASDAQ), a publicly traded, diversified industrial company.

The RectorSeal Story



The Beginnings of RectorSeal

The company was established in 1937 in Houston, TX, as a division of Rector Well Corporation of Ft. Worth, TX. The company’s initial product was a thread sealant (RectorSeal No.1) for oil field threaded fittings.

Entry into the Trades

In the 1950s, RectorSeal invented a new product, RectorSeal No.5, and became an established manufacturer and distributor to the plumbing industry. RectorSeal No.5 rapidly became the tread sealant of choice by plumbers across North America for threaded pipe.

RectorSeal’s continued growth led to the company’s acquisition by Capital Southwest Corporation in 1969. A publicly held company, Capital Southwest Corporation, was headquartered in Dallas, TX.

Development of Firestop

In 1991, RectorSeal acquired Metacaulk, a leader in the firestopping industry. The acquisition helped accelerate RectorSeal’s strategy to manufacture and distribute a vast portfolio of high-quality and scalable building-related safety solutions.

In 1995, an on-site fire test laboratory was built to conduct Underwriter Laboratories (UL) witnessed burns for through-penetration and construction joint assemblies. UL designated the RectorSeal fire lab for fire testing to UL 1479 & UL 2079 codes. Underwriter Laboratories is one of the oldest and most trusted safety certification companies.

Expansion into HVAC & Electrical

With the company’s acquisition of Acid Away during the early 1990s, RectorSeal introduced a patented AC compressor burnout acid neutralizer. With an acquisition of Stewart Hall, RectorSeal gained access to a leading portfolio of coil cleaners and HVAC maintenance chemicals. The acquisition of Nokorode in the early 2000s allowed RectorSeal to expand its plumbing footprint. In addition, the company entered the electrical supplies marketplace through the acquisition of Wire Snagger.

Growth in Domestic Manufacturing

Due to continuous growth, RectorSeal moved to its current headquarters location in Houston, TX, in 1998. In addition, the new facility provided space to construct an integrated chemical lab, manufacturing operations, and a shipping department.

In 2011, RectorSeal acquired Airtec, an HVAC mechanical and plastics manufacturer located in Fall River, MA.

The company’s acquisition program continued in 2021 when TRUaire became RectorSeal’s largest brand. TRUaire is a manufacturer of high-quality grilles, registers, and diffusers (GRD) for cooling, and ventilating installation, with the groundbreaking 100% power coating technology that’s prominent in the residential market. And in 2022, the company acquired Shoemaker Manufacturing Company, further expanding the company’s leadership in the GRD marketplace. The Shoemaker brand is known for its legacy of top-quality GRD products and its agile process to accommodate commercial needs.

Distribution Growth

To support the company’s product growth, distribution facilities have been established across the United States by developing distribution centers located in California, Florida, Indiana, Maryland, Massachusetts, and Texas. The strategic location of the distribution centers ensures timely and accurate delivery of products to all RectorSeal customers.

Doubling Down on the Trades

The name RectorSeal functions as the company’s name and as a brand name appearing on a wide variety of products. The company prides itself on the large number of leading brand names associated with the company through acquisition and internal development. Well-known brand names with a legacy of loyal customers include Safe-T-Switch, AquaGuard, EZ Trap, Clean Check, G-O-N, Kickstart, Novent, SureSeal, Fortress, Slimduct, Wire Grabber, Big Foot, Metacaulk, TRUaire, Shoemaker, and others.

Beyond the brand names associated with the company, RectorSeal today is a recognized leader in the manufacture of firestopping, plumbing, HVAC, and electrical products. Moreover, RectorSeal has innovated and driven solutions for condensate management, lineset protection, solvent cement application, HVAC mounting & installation, pipe joining, DWV solutions, wire pulling, and firestopping.

Since day one, RectorSeal’s growth has centered on the core beliefs of providing innovative products, outstanding customer service, seasoned trainers with versatile training program options, and the desire to help every customer achieve increasingly higher levels of professionalism. It is no wonder that the company adopted “RectorSeal to the Rescue” as the company’s definitive response to customer needs.

Since 2015, RectorSeal and its parent company, CSW Industrials, have been publicly traded on Nasdaq (NASDAQ: CSWI). More information on CSW Industrials can be found at www.cswindustrials.com