UNSPSC 13101712: Chlorosulfonated polyethylene CSM

UNSPSC 13101712 Chlorosulfonated polyethylene (CSM), a Commodity code, covers crack sealant and joint sealing materials that state and local governments procure for pavement maintenance and repair. Recent solicitations show state departments, counties, cities, and special districts buying CSM-type sealants for asphalt concrete pavement crack sealing, bridge joint applications, and parking structure deck coating work, typically in small quantities under IFB or RFQ notice types with fast turnaround cycles.

The buying base spans state transportation departments (Texas, Illinois, Maine), county governments (Santa Clara, Collin), municipal public works departments (San Antonio, Waxahachie, Salem), and transit/facility authorities (Hartsfield-Jackson Atlanta International Airport). The City of San Antonio Finance Department, Procurement Division issued IFB 6100019897 on October 15, 2026, for PolyFlex Type 3 crack sealant (bids due October 16, 2026) requiring two 30-35 pound blocks per box stacked on pallets, FOB Destination with freight prepaid and included in unit price, delivery Monday through Thursday 7:00 a.m. to 6:00 p.m. Central Time at the Southeast Service Center, three-year contract term with two optional one-year renewals and PPI price-adjustment provisions capped at 25 percent. The Texas Department of Transportation Lubbock District issued IFB 601340000066820 in August 2026 for 288 kits of silicone joint sealant (Sikasil 728 RCS Rapid Cure System or TxDOT-approved equal) and 72 heavy-duty caulking guns with August 14, 2026 response deadline. The State of Maine Department of Administrative and Financial Services issued RFQ 17A26041300000000000259 on July 1, 2026, for deck sealant systems and epoxy polymer concrete products in 5-gallon pails, 55-gallon drums, and 260-gallon totes, quotations due July 15, 2026, with estimated annual usage of 400 gallons of penetrating sealers and 2,000 epoxy polymer concrete kits establishing a statewide master agreement. Recent activity concentrates in Texas, California, and scattered Midwest and Northeast jurisdictions; most opportunities carry short response windows (24 hours to two weeks) and require FOB Destination pricing with freight prepaid and no additional fees permitted.