UNSPSC 31411804: Rubber diaphragm seal

A type seal produced by molding or extruding rubber to the desired configuration

UNSPSC 31411804 Rubber diaphragm seal, a Commodity code, covers replacement seals and related elastomer components for industrial equipment, pumps, and infrastructure applications that state and local governments procure for maintenance and repair operations. State and local buyers under this code include municipal utilities and public works departments, transportation agencies, and county purchasing offices purchasing through both direct solicitation and cooperative procurement vehicles. The scope spans compression seals, silicone-coated foam seals, and supporting adhesives and sealants used in bridge joints, industrial pumps, and water systems.

Recent activity shows limited concentration. The Maine Department of Transportation issued an RFQ in May 2026 for a Master Agreement covering 76 line items of bridge joint seals and related materials—compression seals in 23 sizes from 1/2" to 6", silicone-coated foam seals in 23 sizes, gland seals, lubricant adhesive, sealant, primer, backer rod, and transition materials—with delivery to nine MaineDOT locations across five regions, quotations due June 1, 2026 at 4:00 p.m. EST, and initial contract term through June 30, 2027 with four optional one-year extensions. The City of Port Orange, Florida published a Notice of Intent to Award a Single/Sole Source Procurement on September 16, 2026 for NOV Chemineer Moyno pump repair products and services, estimated at $500,000 annually, intended for Carl Eric Johnson, Inc. unless competing authorized dealers demonstrated clear and convincing capability by the same date. The code shows activity in Florida, Maine, and neighboring states served by regional pump service providers, though the recent-opportunities block contains no additional relevant postings beyond these two substantive opportunities.