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Sii Inc. Federal Contracts

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Doing business as SII INC

UEIUEI: the 12-character ID the government gives every company registered for federal work. It replaced the DUNS number in April 2022. Glossary MMRKLNN6PLB3· CAGECAGE code: a 5-character code that identifies one company location for federal work. A company with several sites can have several. Glossary 59990· CLEAR BROOK, VA· Active registration until Mar 10, 2027· NO WEBSITE (opens in a new tab)

Overview

Buyers and offices that award Sii prime contracts, US$, active FY2021–FY2026

Obligated since award on contracts active FY2021–FY2026

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Buyers (sub-agency)OfficesThis companyNavy$41.4KNSWC CARDEROCK (N00167)$41.4K · Navy officeSii Inc.$41.4K
Awards toSubcontracts toCircle area = dollars

Insight NSWC CARDEROCK (N00167) is its largest buyer. See more on the Buyers tab

1 buying office

Prime contract obligationsObligation: money the government has legally committed to a contract. It is not the same as money paid. Example: $6M obligated of a $10M ceiling. Glossary, FY2014–FY2026

$95.4K

Subcontracts it received

$258K

from 2 primes

About

From the company's SBA profile, updated Mar 2026

SII, Inc. is a mission-critical defense contractor with over two decades of unmatched performance in the engineering and production of specialized polymer materials. We serve as a vital link in the U.S. Navy’s submarine supply chain, providing the acoustic damping and structural reliability essential for sub-surface superiority. As we enter our next phase of growth, SII is realigning its operations to scale alongside the Navy’s increased procurement tempo, ensuring that our proprietary technology continues to define the standard for silent operations. In an era of increasing undersea competition, acoustic superiority is the primary determinant of survivability. SII, Inc. provides the United States Navy and its Tier 1 partners with the specialized material science required to maintain a stealth advantage in contested waters.

Prime contract obligations by fiscal year, US$, FY2014–FY2026

Agencies report with a delay; the latest year will rise

Hover over a year to see its value.

FY14$54.1KFY22FY24$22.1K

Insight Largest year: $54.1K in FY2014; since FY2021, $22.1K in FY2024. See more on the Contracts tab

Prime obligations since award by state of performance, US$, contracts active FY2021–FY2026

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AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFLPR
  1. Maryland$22.1K · 53%
  2. Virginia$19.2K · 47%
Circle area = dollarsOutlined: head office state (Virginia)

Insight 53% was performed in Maryland. See more on the Contracts tab