Defense programs rarely start with a full drawing package on day one. They start with a part number, a material spec, and a supplier who can receive the print without creating a compliance problem. Great Lakes Industrial manufactures and supplies the gaskets, seals, O-rings, fluid connectors, hydraulic valves, molded components, and fasteners those programs specify, with technical data handled inside our certified, access-controlled environment. It's the same CMMC manufacturing environment prime contractors expect when CUI is part of the package.
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Custom and standard gaskets in rubber, foam, paper, felt, and plastic, cut and produced to print for compression, thermal, and pressure requirements. Whether you need a single die-cut gasket for a cover plate or a production run of molded gasket sets, we support prototype through production quantities, with Mil-Spec material options where the drawing calls for them.
A full range of O-rings, rod and piston seals, PIP seals, and custom sealing profiles for static and dynamic applications, including rotary and reciprocating seal designs. Nearly 70 years of sealing engineering back our material selection, durometer, and compound recommendations for defense duty cycles.
Hose assemblies, fittings, and fluid connector components, including quick-disconnects and adapter fittings, for hydraulic and pneumatic systems. As a 60-year Parker Hannifin partner, we source and build to spec across a wide range of pressure classes and end configurations.
Hydraulic valves and fluid logic assemblies engineered to integrate cleanly into your existing systems, plus a sustained supply of the maintenance parts that keep those systems in service.
Grommets, boots, bellows, balls, molded shapes, overmolded parts, and custom extrusions in rubber and plastic. Well suited to programs where the geometry is proprietary and the print itself is the sensitive information.
Metal, plastic, and specialty fasteners, including screws, nuts, bolts, pins, rings, clamps, and clips, available as line items or kitted alongside the sealing components they install with.
Mil-Spec materials and parts available. ISO 9001 certified quality system, backed by a CMMC certified facility. Material certifications and documentation packages provided on request.
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse varius enim in eros elementum tristique. Duis cursus, mi quis viverra ornare, eWe stock 40,000+ parts across multiple facilities and build custom to print on a regular basis. Send us the requirement, and we'll tell you quickly whether it's a fit. It's the same catalog our Tier 1 and Tier 2 manufacturing partners rely on, whether the print calls for a single gasket or a full kit.ros dolor interdum nulla, ut commodo diam libero vitae erat. Aenean faucibus nibh et justo cursus id rutrum lorem imperdiet. Nunc ut sem vitae risus tristique posuere.
Request a Compliant QuoteSpeak With a Compliance SpecialistOur certification applies to a dedicated, access-controlled environment built for the secure handling of technical drawings, specifications, and Controlled Unclassified Information. It doesn't extend to every corner of our business. In practice, it means the CMMC compliance requirements in your RFQ, your NDA, or your supplier qualification package can be met by the part of our operation that touches your data.
If you're still working through your own CMMC requirements, or figuring out what CMMC readiness looks like for your supply base, ask us directly. We'll tell you where our certification fits your program and where it doesn't.
Why Defense Suppliers Choose
Great Lakes Industrial
When technical information needs to move between us, we rely on controlled processes designed to protect sensitive data and maintain compliance across the defense supply chain.
✓ Secure exchange of technical drawings and models
✓ Controlled access portals where required
✓ Secure email and encrypted file transfer
✓ NDA-backed technical discussions
✓ These are the specific channels prime contractors, Tier 1 and Tier 2 suppliers, and procurement teams use to move a print between organizations without creating a liability.
Prime
Contractors
Tier 1 & Tier 2 Suppliers
Procurement & Engineering Teams
Secure manufacturing support for approved supplier networks and defense programs.
Helping suppliers who handle CUI maintain compliance readiness and secure collaboration.
Supporting secure technical exchanges, vendor qualification, and manufacturing execution.
Compliance obligations flow downhill. Whether you're the prime holding the contract or a Tier 2 shop receiving a redacted print, the requirement to protect Controlled Unclassified Information lands on everyone who touches it. Great Lakes Industrial is built to be the supplier who doesn't become the weak link. It doesn't matter whether you're a defense contractor managing multiple DoD contracts or a smaller shop with one flow-down clause to satisfy. We support both ends of that range, across the specific supply chains our customers operate in.
Secure manufacturing support for approved supplier networks and active defense programs. We can receive technical data directly, work to print inside a controlled environment, and provide the documentation your compliance team needs for supplier qualification.
If your flow-down clauses now require CMMC-certified partners, we can help you satisfy that requirement without rebuilding your own supply base. You get a certified source for sealing and fluid handling components, and a partner who understands what your prime is going to ask of you.
Vendor qualification, quote turnaround, and part availability across 40,000+ inventoried components. We respond quickly to RFQs, including short-notice requests, and ship same day on stocked items.
Secure exchange of drawings, models, and specifications, plus sealing design support during development. NDA-backed technical discussions are standard practice for us, not an exception.
Ongoing supply of replacement seals, gaskets, valve components, and maintenance parts for fielded systems, including legacy parts that are difficult to source elsewhere.
Across all five groups, the constant is the same: a manufacturing partner who already holds the certification your flow-down clause requires.
Not sure whether your program requirements are a fit? Send us the flow-down language, and we'll tell you directly.
Compliance claims only matter if they can be verified. This is the detail level defense contractors ask for after their own third-party assessment, not a marketing summary. Here's exactly what we hold, what it covers, and what we can provide in writing.
Certified by an accredited C3PAO on [certification date]. Certificate ID [ID] available on request. Scope covers a dedicated, access-controlled environment built for handling Controlled Unclassified Information, including technical drawings and specifications.
Our security practices are built against the 800-171 control set that underpins our Level 2 certification, with documented policies, monitoring, and incident response.
Our assessment results are reported in the Supplier Performance Risk System under CAGE code [CAGE]. Score available to qualified buyers on request.
We meet the safeguarding and cyber incident reporting obligations required of contractors handling covered defense information. [Confirm before publishing.]
Our quality management system covers manufacturing and distribution operations, backed by nearly 70 years of production history.
Materials sourced and documented to military specification where the drawing requires it, with certifications of conformance provided.
Certificates of conformance, material certifications, first article inspection reports, and our CMMC certification details for your supplier file, ready for your own audit readiness or program review.
Whether you need a secure manufacturing partner for an upcoming bid, want to strengthen your supply chain's CMMC readiness, or need a straight answer on CMMC compliance for a specific part number, Great Lakes Industrial is ready to help.
