UNSPSC 23271721: Plastic joining materials

The methods for joining plastics and composites can be divided into three major categories mechanical fastening, adhesive and solvent bonding, and welding. Welding is an effective method of permanently joining plastic components.

UNSPSC 23271721 Plastic joining materials is a Commodity code under which state and local governments procure crack sealants, joint sealers, and related polyurethane or silicone-based compounds for pavement and infrastructure repair. Recent activity shows cities and counties soliciting these materials for asphalt crack sealing, bridge joint sealing, and deck protection—work that ranges from routine maintenance to specialized pavement rehabilitation. The issuing bodies span city procurement offices (San Antonio Finance Department, City of Waxahachie, City of Salem), county departments (Santa Clara County, Collin County, Sanitation District No. 2-3), state transportation agencies (Texas Department of Transportation Lubbock District, State of Maine Department of Transportation), and special authorities (Hartsfield-Jackson Atlanta International Airport Department of Aviation). Texas and California jurisdictions dominate recent solicitations, with activity also in Maine, Oregon, Georgia, and Illinois. The code shows steady procurement momentum, with multiple opportunities posted in recent months across both routine maintenance contracts and specialized renovation projects.

State and local buyers are actively soliciting under this code for concrete crack sealants (PolyFlex Type 3 meeting ASTM standards for asphaltic concrete pavement), silicone joint sealants for bridge and pavement applications (Sikasil 728 RCS), hot-poured joint sealants, epoxy polymer concrete overlay systems, and deck protective coatings. Representative recent opportunities include the City of San Antonio Finance Department's IFB 6100019897 for PolyFlex Type 3 crack sealant with bids due October 16, 2026, requiring FOB Destination delivery to the Southeast Service Center and compliance with Texas Department of Transportation specifications; the Texas Department of Transportation Lubbock District's IFB 601340000066820 for 288 kits of silicone joint sealant and 72 heavy-duty caulking guns with bids due August 14, 2026; and the State of Maine Department of Administrative and Financial Services' RFQ 17A26041300000000000259 for deck sealant systems and epoxy polymer concrete products (penetrating sealers in multiple container sizes, single- and double-layer deck treatments, epoxy polymer concrete overlay kits) with quotations due July 15, 2026, establishing a master agreement for statewide and multi-agency purchasing through August 30, 2031. County of Santa Clara's pavement rehabilitation and repair solicitations (ITB-PRC-FY27-0066 for $2.5 million in pavement installation and repair services and ITB-PRC-FY27-0091 for Vasona Lake County Park East Trail Reconstruction) incorporate joint sealing and epoxy coating work as components of broader infrastructure projects. Texas procurement vehicles (Collin County IFBs for road materials, Harris County Department of Education's Choice Partners cooperative contract) show sustained demand for performance-grade materials meeting ASTM and TxDOT specifications, with price adjustments pegged to Producer Price Index tracking for ready-mix concrete or documented cost escalation. Prevailing wage requirements apply to public-works sealant and coating projects in California, Oregon, and Texas jurisdictions.