RectorSeal

About RectorSeal

RectorSeal has been a cornerstone of the professional trades since its founding in 1937 in Houston, Texas. The company was established as a division of Rector Well Equipment Company of Fort Worth, Texas, with its roots in the oil field — RectorSeal's initial product was a thread sealant for oil field threaded fittings. That spirit of solving real-world problems for working professionals has driven the brand ever since.

In the 1950s, RectorSeal invented RectorSeal No. 5 and became an established manufacturer and distributor to the plumbing industry. That one product changed everything: RectorSeal No. 5 became a staple of the plumbing industry and remains one of the most common pipe thread sealants in the U.S. today. Today, RectorSeal thread sealants continue that legacy of reliability, offering multi-purpose formulations that lubricate, seal, and protect threaded connections across plumbing and HVAC applications.

A Trusted Partner Across the Trades

RectorSeal products are distributed through an extensive wholesale distribution network serving the plumbing, industrial, HVAC-Refrigeration, construction, electrical, and hardware marketplaces. That reach reflects a product line that has grown well beyond its chemical sealant origins. 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.

In the HVAC world, RectorSeal is particularly well known for its condensate management solutions. Their drain pans and condensate pumps protect heating and cooling systems from water damage, with product lines like the Goliath, Titan, and Spartan drain pans engineered for crack resistance, high to extreme temperature durability, and a one-piece molded pan/riser design. Complementing these are the RTP Series condensate removal pumps — automatic condensate removal pumps for heating and air conditioning systems, controlled by a float switch mechanism.

Speaking of float switches, RectorSeal's Safe-T-Switch and All-Access lines have become go-to solutions for HVAC installers nationwide. The Safe-T-Switch product series features the industry's only patented, code-compliant condensate overflow switches with a built-in, easy-access, external, hand-ratcheting float that adjusts without uninstalling or cap removal. These float switches are designed to detect clogged condensate drains and shut down the system before water damage can occur — a small device with an outsized impact on system reliability.

Chemical and Mechanical Solutions for Every Job

Beyond HVAC, RectorSeal's plumbing parts and accessories — including pipe cements, push-to-connect fittings, and chemical cleaners — give tradespeople everything they need to complete a job confidently. Their scuppers and drains portfolio rounds out their condensate management offering, providing reliable drainage solutions for both residential and commercial installations.

Since 2015, RectorSeal and its parent company, CSW Industrials, have been publicly traded on Nasdaq (NASDAQ: CSWI), underscoring the brand's growth from a regional sealant maker into a nationally recognized leader. Their growth has centered around a simple mission: to provide innovative solutions to the professional trades, helping professionals in the heating & cooling, plumbing, electrical, and construction industries perform their work faster and with greater reliability.