UNSPSC 31411801: Welded diaphragm seal

A type seal welded or bonded directly to the upper housing, permitting removal of the upper housing without a loss of fill fluid

UNSPSC 31411801 Welded diaphragm seal (Commodity) shows minimal recent state and local procurement activity directly aligned with the code's nominal scope. The single relevant opportunity on file is the Maine Department of Transportation's RFQ 17A 260427-275, issued May 18, 2026, establishing a Master Agreement for bridge joint seals and related materials — a procurement that encompasses compression seals, silicone coated foam seals, gland seals, and supporting materials such as lubricant adhesive, sealant, primer, and backer rod delivered to nine MaineDOT locations across five regions. The remaining recent state and local records tagged under this code — Williamson County's administrative relocation notice, Sourcewell's law enforcement equipment cooperative, Brevard County's fleet parts inventory management, the City of Atlanta's heavy-duty trailer repair procurement, and Sarasota County Schools' automotive parts supply agreement — are unrelated to welded diaphragm seals or bridge infrastructure joint sealing and appear to reflect tagging misalignment rather than genuine demand under the code.

The Maine opportunity represents the only concrete recent solicitation within the code's actual scope. MaineDOT's procurement, with a response deadline of June 1, 2026, sought quotations on an FOB Destination basis with estimated evaluation quantities of 100 linear feet per line item across 23 sizes of compression and pre-compressed foam seals, supported by lubricants, sealants, primers, backer rod, and transition materials. The contract period runs June 15, 2026 through June 30, 2027, with four optional one-year extensions available through June 30, 2031. The solicitation required manufacturer literature, equivalency documentation, warranty information, and a Responsible Bidder Form; Maine municipalities, political subdivisions, and school districts may access the resulting contract if the bidder consents. The code shows limited recent activity outside Maine and no identifiable pattern of repeat issuers or geographic concentration.