UNSPSC 31411706: Mechanical seals

Mechanical seals are devices that are used to provide a seal at the point of entry or exit of a rotating shaft. Simply a method of containing fluid within a vessel (typically pumps, mixers, etc.) where a rotating shaft passes through a stationary housing or occasionally, where the housing rotates around the shaft.

UNSPSC 31411706 Mechanical seals (Commodity) covers the supply of sealing components for industrial and infrastructure applications, but recent state and local procurement under this code focuses narrowly on bridge joint seals and related materials. The Maine Department of Transportation's RFQ 17A 260427-275, issued May 18, 2026, with responses due June 1, 2026, sought compression seals in 23 sizes (1/2" to 6" width), silicone coated pre-compressed foam seals, non-brand-specific gland seals, and supporting materials including lubricant, adhesive, sealant, primer, and backer rod across nine MaineDOT delivery locations. The contract structure runs from June 15, 2026 through June 30, 2027 with four optional one-year extensions, pricing on an FOB Destination basis, and delivery specified in linear feet with estimated evaluation quantities of 100 linear feet per line item. Issuing bodies under this code are limited; the recent opportunity block shows one substantive solicitation (Maine DOT through the State of Maine Department of Administrative and Financial Services) and one unrelated notice (Williamson County Purchasing Department relocation announcement with no procurement scope). The remaining recent opportunities in the block involve automotive parts, heavy-duty trailers, and law enforcement equipment—none aligned with mechanical seals.

Maine is the primary jurisdiction showing recent activity under this code as of mid-2026. Bidders on the Maine DOT solicitation must provide manufacturer literature, equivalency documentation for alternative products, warranty information, and a Responsible Bidder Form certifying no debarment, with quoted prices remaining firm for one year and any adjustments requiring sixty days' advance notice supported by manufacturer documentation. The RFQ anticipates one award to the lowest qualified bidder, and municipal and school districts in Maine may be permitted to access the resulting contract at State negotiated pricing if the bidder consents. No set-aside designations or restrictions limiting response eligibility are identified in the Maine solicitation, and no specific award value or budget is disclosed. The code shows sparse recent activity overall; apart from the Maine opportunity, no other state or local solicitations under 31411706 appear in the recent-opportunities block.