UNSPSC 31201700: Sealants

A group of products used to close small openings that are difficult to shut with other materials, such as concrete, drywall, etc. Desirable properties of sealants include insolubility, corrosion resistance, and adhesion. Uses of sealants vary widely and sealants are used in many industries, for example, construction, automotive and aerospace industries. The main difference between adhesives and sealants is that sealants typically have lower strength and higher elongation than do adhesives.

Since the main objective of a sealant is to seal assemblies and joints, sealants need to have sufficient adhesion to the substrates and resistance to environmental conditions to remain bonded over the required life of the assembly. Sealants fall between higher-strength adhesives at one end and extremely low-strength putties and caulks at the other.

UNSPSC 31201700 Sealants, a Class code, encompasses sealant materials—joint sealants, silicone sealants, concrete sealants, and related application products—that state and local governments procure for infrastructure maintenance, pavement preservation, facility repair, and construction projects. Recent solicitations show government buyers selecting specific proprietary products (CRAFCO Mastic One sealants, E5 Shield concrete sealant, Pavon repair liquids) or accepting equivalent alternatives, with application services frequently bundled into the scope. The mix of issuing bodies includes state transportation departments (Missouri Department of Transportation, Florida Department of Transportation), cities (Peoria, Arizona), counties (Seminole County, Dallas County), universities (University of Texas at Tyler), and transit authorities (Dallas Area Rapid Transit Authority), with state DOT agencies appearing as frequent repeat buyers for pavement and infrastructure preservation programs.

Recent activity is concentrated in the Southwest and Midwest, with Arizona, Missouri, and Florida driving visible procurement volume. The Missouri Department of Transportation Southwest District posted an as-needed sealant and application equipment RFQ (solicitation 300000240582233, due June 3, 2026) for CRAFCO or Mastic One sealants with a contract period extending through June 2031 with renewals. The City of Peoria issued an IFB for pavement management and preservation services (P26-0051, due May 22, 2026) with an estimated annual expenditure of $1.7 million for polymer-modified slurry seal delivery and application. Seminole County, Florida solicited a term contract for caulking, coatings, joint sealants, and pressure washing (IFB 604483-22/LNF, due February 1, 2023—a closed opportunity). The Missouri Department of Transportation also posted single-source procurements for proprietary sealant products: Pavon Repair Liquid and Pavon Indeck Liquid across six districts (due April 13, 2026) and E5 Shield concrete sealant for the Northeast District (due February 2, 2026). The University of Texas at Tyler included sealant work (tub and shower caulking) as a line item in its Liberty Landing Apartments RFP (due April 3, 2026).