Top DHS gasket, packing, and sealing device manufacturing contractors
In the 12 months ending Oct 5, 2026, the Department of Homeland Security obligated $9.9M in net prime contract dollars under NAICS 339991, up 94.3% from $5.1M in the preceding 12 months. 20 prime contractors received positive obligations, and 2 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Homeland Security. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top DHS contractors for NAICS 339991
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | Pioneer Industries, LLC | $7.7M | $1.4M | 77.5% | ▲ 1 |
| 2 | A W Chesterton Co | $771K | $1.1M | 7.7% | ▲ 1 |
| 3 | Guardian Systems LLC | $311K | $0 | 3.1% | New |
| 4 | Defense Maritime Solutions, Inc. | $200K | $1.9M | 2.0% | ▼ 3 |
| 5 | Fincantieri Marine Systems North America, Inc. | $142K | $0 | 1.4% | New |
| 6 | K & M Industrial LLC | $112K | $0 | 1.1% | New |
| 7 | Johnson & Towers LLC | $90K | $0 | 0.9% | New |
| 8 | Stealth Supply, Inc. | $90K | $0 | 0.9% | New |
| 9 | Aviation Devices and Electronic Components, L.L.C. | $71K | $77K | 0.7% | ▼ 4 |
| 10 | Marine Jet Power Inc | $68K | $0 | 0.7% | New |
| 11 | Norfolk Bearings & Supply Co Inc | $66K | $0 | 0.7% | New |
| 12 | Duramax Marine, LLC | $62K | $471K | 0.6% | ▼ 8 |
| 13 | Ships Machinery International, Inc. | $53K | $0 | 0.5% | New |
| 14 | Canyon Marine Solutions LLC | $49K | $0 | 0.5% | New |
| 15 | Aqua-Chem, Inc. | $43K | $0 | 0.4% | New |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- Pioneer Industries, LLC$1.4M → $7.7M (+$6.3M) · now #1
- Guardian Systems LLC$0 → $311K (+$311K) · now #3
- Fincantieri Marine Systems North America, Inc.$0 → $142K (+$142K) · now #5
Largest declines
- Defense Maritime Solutions, Inc.$1.9M → $200K (−$1.7M) · now #4
- Duramax Marine, LLC$471K → $62K (−$409K) · now #12
- A W Chesterton Co$1.1M → $771K (−$350K) · now #2
New to this market
14 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| Guardian Systems LLC | Feb 13, 2026 | $311K |
| Fincantieri Marine Systems North America, Inc. | Apr 15, 2026 | $142K |
| K & M Industrial LLC | Jun 17, 2026 | $112K |
| Johnson & Towers LLC | Jul 2, 2026 | $90K |
| Stealth Supply, Inc. | Aug 27, 2026 | $90K |
| Marine Jet Power Inc | May 6, 2026 | $68K |
| Norfolk Bearings & Supply Co Inc | Jul 16, 2026 | $66K |
| Ships Machinery International, Inc. | Jul 10, 2026 | $53K |
Where the money comes from
Funding sub-agencies within the Department of Homeland Security, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| U.S. Coast Guard | $10.0M | $5.1M | Up $4.8M (94.6%) |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| 70Z08026F21650B00 | Pioneer Industries, LLC SEAL ASSY SHAFT (4320-01-357-8872 2 EA ) SEAL ASSY, SHAFT SPRING (4320-01-118-5280 10 EA) STERN SEAL, FACE CHANGE OUT KT (5330-01-527-0696 6 KT) SEAL, MAJOR OVERHAUL KT… | $1.2M | Jul 9, 2027 |
| 70Z08526F37014B00 | Pioneer Industries, LLC VARIOUS DEFENSE MANUFACTURING SOLUTIONS PARTS AND SUPPLIES FOR USE ON US COAST GUARD NATIONAL SECURITY CUTTERS. | $1.7M | Aug 6, 2027 |
| 70Z08026C14003B00 | Pioneer Industries, LLC THE USCG INTENDS TO PROCURE ON A BRAND NAME BASIS ORIGINAL EQUIPMENT MANUFACTURER RUDDER SEAL SERVICE KITS A AND B USED TO SUPPORT THE 154 WPC COAST GUARD CUTTERS. | $2.3M | Sep 28, 2027 |
Common questions
Who are the top DHS contractors for NAICS 339991?
In the latest 12 months, Pioneer Industries, LLC ($7.7M), A W Chesterton Co ($771K), Guardian Systems LLC ($311K) received the most DHS obligations for gasket, packing, and sealing device manufacturing.
How concentrated is this market?
The eight largest primes held 94.8% of positive obligations, and Pioneer Industries, LLC alone held 77.5%. 14 contractors won their first obligations in this market during the latest 12 months.
Are any large DHS NAICS 339991 contracts ending soon?
3 of the largest awards in this market reach their current end date in the next 18 months. The first is 70Z08026F21650B00 (Pioneer Industries, LLC, $1.2M obligated), ending Jul 9, 2027. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
Related markets
NAICS 339991 across all agencies
DoD · NAICS 339991
$105.5MFigures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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