Niantic Seal Inc.
Lincoln, RI Doing business as Atco Part of Insco Intermediate Holdings, LLC
- UEI
- TGUHUW52MLE3
- CAGE
- 59871
- Primary NAICS
- 423840 Industrial Supplies Merchant Wholesalers
- SAM.gov registration
- Active through
Company facts
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- Corporate family
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-
Parent
Insco Intermediate Holdings, LLC
YSLPMSZFE3M5
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Parent
Insco Intermediate Holdings, LLC
YSLPMSZFE3M5
- SAM.gov registration date
- Physical address
- 17 Powder Hill Rd, Lincoln, RI 02865, USA
- Website
- inscogroup.com
- Employees
- 1-10
- Estimated annual revenue
- $1M-$10M
- Industry
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- Industrials
- Capital Goods
- Industrial Conglomerates
- Industrials & Manufacturing
- SIC code
- 50 Wholesale Trade – Durable Goods
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $1,201 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Defense Logistics Agency | $1,201 |
Contract awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| O-ring | Land and Maritime (DLA) | $1,201 | |
| Adapter, waveguide | Land and Maritime (DLA) | $1,670 | |
| Gasketing material | Land and Maritime (DLA) | $0 | |
| Seal | Land and Maritime (DLA) | $12,941 | |
| Bushing, nonmetallic | Land and Maritime (DLA) | $1,739 |
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| Electric Boat Corporation | N0002424C2110 | $77,400 | |
| Electric Boat Corporation | N0002417C2117 | $35,610 | |
| Electric Boat Corporation | N0002417C2100 | $58,020 | |
| Electric Boat Corporation | N0002417C2100 | $54,000 |
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Hyperox Technologies | San Diego, CA | 541330 Engineering Services |
| Patriot Rubber | Duxbury, MA | 423840 Industrial Supplies Merchant Wholesalers |
| Mechanical Rubber Prdts Co Inc. | Warwick, NY | 325212 Synthetic Rubber Manufacturing |
| Maga Defense, LLC | Houston, TX | 339991 Gasket, Packing, and Sealing Device Manufacturing |
| DBR Industries, Inc. | Newtown, PA | 423840 Industrial Supplies Merchant Wholesalers |
About the company
Niantic Seal Inc., doing business as Atco, manufactures o-rings, gaskets, seals, hoses, and fastening devices for the Department of Defense and Defense Logistics Agency as a prime contractor (90% of recent awards) and as a subcontractor to defense primes. The vendor is a for-profit manufacturer based in Lincoln, Rhode Island, and operates as a subsidiary of Insco Intermediate Holdings, LLC. Niantic Seal competes in full-and-open procurements without SBA set-asides; the company is not designated 8(a), HUBZone, SDVOSB, WOSB, or other set-aside categories.
Customer concentration is extreme and anchored to Navy submarine construction. The Department of the Navy Naval Sea Systems Command accounts for 95% of combined potential value across recent awards ($174 thousand of $205 thousand total), driven by twenty-six prime purchase orders for sealing devices, o-rings, and hoses. The Defense Logistics Agency splits the remainder between Troop Support Hardware (five awards, $11 thousand) and Land and Maritime (six awards, $9 thousand). A recent representative prime contract is a Defense Logistics Agency purchase order issued April 16, 2026, for o-rings with a ceiling of $1,200.50 and completion by July 20, 2026. The vendor holds no standing IDIQs, GWACs, or BPAs; all work flows through individual purchase orders.
Niantic Seal operates a small subcontracting footprint, with four sub awards over the past five years routed entirely to Electric Boat Corporation for submarine construction material. Those subs cover long-lead sealing materials for SSN 814 and SSN 815, weapon cradle roller leaf spring fasteners, and stowage components for SSN 804 construction. The prime portfolio concentrates on gasket, packing, and sealing device manufacturing (10 awards), rubber product manufacturing (5 awards), and hoses and belting (4 awards), by NAICS; by PSC code, hose and flexible tubing (15 awards) and o-rings (5 awards) dominate. Activity is sparse and flat — one award in 2022, two in 2024, one each in 2025 and 2026 — with combined obligated dollars ($432 thousand) exceeding combined potential value, a signature of small-dollar firm-fixed-price production orders characteristic of military supply-chain work.
Quick answers
Is Niantic Seal Inc. registered in SAM.gov?
Yes. Niantic Seal Inc.'s SAM.gov registration is active through November 17, 2026.
What is Niantic Seal Inc.'s CAGE code?
Niantic Seal Inc.'s CAGE code is 59871, and its Unique Entity ID (UEI) is TGUHUW52MLE3.
How much has Niantic Seal Inc. received in federal contracts?
Federal contracts obligated $1,201 to Niantic Seal Inc. in fiscal years 2023 through 2027.
What is Niantic Seal Inc.'s most recent federal award?
Niantic Seal Inc.'s most recent federal contract award is O-ring (SPE7L126P6102), from Land and Maritime (DLA), on April 16, 2026.
On GovTribe
See Niantic Seal Inc.'s full federal record
- Federal contract awards
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors