PSS Seal
PSS Seal manufactures mechanical face shaft seals and maintenance kits for marine propulsion and industrial rotating equipment, selling through OEMs, a global dealer network, and direct channels. Founded in 1981, it supplies recreational boaters, commercial fleets, water utilities, and industrial pump operators worldwide.
- Company typePrivate
- Founded1981
- HeadquartersLynnwood, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What PSS Seal does
PSS Seal, LLC is a US-based manufacturer of mechanical face shaft seals for marine propulsion systems and industrial rotating equipment, founded in 1981 and headquartered in Mukilteo, Washington, with a regional East Coast Hub in Davie, Florida. The company produces the PSS Shaft Seal family — Type A (standard recreational, 6-year maintenance interval), PRO (premium with shaft retention collar, 8-10 year interval), Type B (heavy-duty commercial up to 6.5" shafts), Type C (industrial up to 8" shafts), and a dedicated Rudder Seal — built on a mechanical face seal architecture pairing a rotating stainless steel rotor (316L, Nitronic 50, or Super Duplex 2507) against a stationary carbon graphite stator, with reinforced bellows compensating for axial movement and misalignment. The product line is completed by a modular Flange & Bladder System, maintenance kits, and accessories (FlowTrue flow meter, Hy-Vent vent, retention collars, plumbing adapters).
The business model is built on four hardware revenue streams: (1) PSS Shaft Seals sold through authorized dealers and direct OEM relationships with boat builders, (2) recurring maintenance kits and replacement bellows, (3) accessories sold via the company's online store at pssseal.store, and (4) build-to-suit custom flange systems for industrial applications priced on quote. Go-to-market is hybrid: OEM-embedded as standard equipment on new vessel builds, channel-led through a global dealer network, and direct for custom industrial work. The company claims the #1 position in marine mechanical seals worldwide and holds type approvals from Bureau Veritas, ABS, and RINA, with memberships in the Fluid Sealing Association and AWWA. Customers span recreational boat owners, commercial fleet operators (ferries, tugboats, research vessels, military, coast guard), water utilities, and industrial pump OEMs.
PSS Seal firmographics
Firmographics- Name
- PSS Seal
- Legal name
- PSS Seal, LLC.
- Website
- https://shaftseal.com
- Company type
- Private
- Founded year
- 1981
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- PSS Seal manufactures mechanical face shaft seals and maintenance kits for marine propulsion and industrial rotating equipment, selling through OEMs, a global dealer network, and direct channels. Founded in 1981, it supplies recreational boaters, commercial fleets, water utilities, and industrial pump operators worldwide.
- Ownership category
- akta.pro rank
PSS Seal industry classification
Industry- Product category
- Marine Mechanical Shaft Seals
- NAICS
- Gasket, Packing, and Sealing Device Manufacturing (339991), Rubber Product Manufacturing (3262)
- SIC
- Gaskets, Packg & Sealg Devices & Rubber & Plastics Hose (3050), Fabricated Rubber Products, Nec (3060)
- akta.pro primary industry
- Seals, Gaskets & Fluid Connectors (O-rings, packings, rotary seals, quick couplers) (IMAHAGAI)
- akta.pro secondary industries
- Seals, Valves & Auxiliary Components (for Pumps/Compressors) (IMAHANAH), Sealants, Adhesives, Gaskets & Marine Elastomers (IMAJAKAL)
Keywords
Where PSS Seal is headquartered
LocationHeadquarters
- HQ city
- Lynnwood
- HQ country
- United States
- HQ region
- North America
Offices2 records
Markets served
PSS Seal business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- PSS Shaft Seals (Primary): Complete mechanical shaft seals sold for marine and industrial applications. Available in multiple models: Type A (standard), Type B (commercial), Type C (large shaft), Rudder Seal, and PRO version. Sold through dealers and direct OEM relationships.
- Maintenance Kits: Replacement bellows, O-rings, set screws, and hose clamps sold as maintenance kits for ongoing customer relationships. Type A kit uses nitrile bellows, PRO kit uses silicone bellows.
- Accessories and Components: Individual accessories including FlowTrue adjustable flow meter, Sight Flow Indicator, Hy-Vent, Silicone Hose, T-Kits, O-Ring Kits, Shaft Retention Collar, and Seal Retention Collar sold through online store.
- Custom Flange Systems: Build-to-suit flange systems and bladder inserts for custom industrial and marine applications. Quote-based pricing for custom configurations.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Standard PSS Shaft Seals - Contact dealer or request quote |
Go-to-market motion3 records
Distribution channels4 records
Marketing channels5 records
PSS Seal product offering
Product offeringCore offering
PSS Seal manufactures mechanical face shaft seals (Packless Sealing System) for marine vessel propulsion and industrial rotating equipment. The product line includes Type A, PRO, Type B, Type C, and Rudder Shaft Seals, along with a Flange & Bladder System, maintenance kits, and accessories such as flow meters, vent valves, and retention collars. Seals create a watertight sealing surface between a rotating stainless steel rotor and a stationary carbon graphite flange, eliminating the need for traditional packing glands.
Product overview
PSS Seal is a manufacturer of mechanical face shaft seals for marine and industrial applications. The product portfolio centers on the PSS (Packless Sealing System) Shaft Seal family, which includes five distinct seal types: Type A (standard marine, 6-year maintenance), PRO (premium with shaft retention collar, 8-10 year maintenance), Type B (heavy-duty for larger shafts up to 6-1/2"), Type C (industrial for 7"-8" shafts with flange mounting options), and Rudder Seal. The company also offers the Flange & Bladder System as an accessory for specialized installations, along with complementary maintenance kits, accessories (FlowTrue flow meter, Hy-Vent vent valve, retention collars, T-Kits, O-ring kits, silicone hose, and sight flow indicators). The product line serves diverse applications including marine vessels, water utilities, water treatment, therapy pools, current tanks, irrigation, mining, and steam turbines.
Differentiator
Problem solved
Functional benefit
Products and services
- PSS Type A Shaft Seal
Quantifiable outcome
- 40,000+ engine hours recorded on same original components in commercial vessels
- +3 more outcomes
Companies that use PSS Seal
Customer profileNamed customers8 records
Segments3 records
Ideal customer profiles3 records
PSS Seal technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature8 records
PSS Seal partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered notable customer reference and minor.
- Kenosha Water Utilitynotable customer referenceKenosha Water Utility from Kenosha, WI completed retrofit of stuffing box type configurations at their water production plant with PSS Shaft Seals and mounting flanges for water purification applications.
- FPI Pumpsnotable customer referenceFPI Axial Flow Propeller Pumps utilizes PSS Shaft Seals for impeller shafts handling 1,000 to 120,000 gallons per minute in various industrial water applications.
- Everett HydraulicsminorEverett Hydraulics is listed among brands using PSS mechanical seals in their equipment.
- AAg SolutionsminorAAg Solutions is listed among brands using PSS mechanical seals in their equipment.
Scale indicators4 records
Recent moves1 record
Expansion highlights5 records
PSS Seal competitors and assessment
Company assessmentDirect peers
- Buck Algonquin: Buck Algonquin produces marine mechanical seals, stuffing boxes, and stern tube sealing equipment for commercial and military marine applications. It competes with PSS Seal's Type B, Type C, and Flange & Bladder lines for industrial and commercial marine shaft sealing.
- Tides Marine: Tides Marine is a US-based manufacturer of dripless shaft seals, rudder seals, and related marine components for recreational and commercial vessels. It directly competes with the PSS Shaft Seal family in OEM and retrofit marine shaft sealing applications.
- Duramax Marine: Duramax Marine manufactures dripless shaft seals and bearing systems for inboard/outboard powered boats. It is the most frequently cited competitor to PSS Seal in marine propulsion sealing and overlaps closely with the Type A and PRO product positioning.
Broad incumbents
- John Crane: John Crane is a global leader in mechanical seals and sealing technologies for the process industries. It is not a direct boat-propulsion competitor but represents the broader mechanical seal category PSS plays in, particularly for industrial pump and mixer sealing.
- Flowserve Corporation: Flowserve is a major industrial pump, valve, and seal manufacturer serving power, oil & gas, water, and chemical industries. Its mechanical seal product line competes with PSS Seal in industrial pumping and water utility applications.
- AESSEAL: AESSEAL is one of the world's largest mechanical seal manufacturers, with shared branding appearing on the PSS Seal website footer. While AESSEAL serves process industries broadly, its mechanical face seal technology and global footprint make it the most strategically relevant peer and likely relationship partner for PSS Seal.
- A.W. Chesterton: A.W. Chesterton is a specialty industrial sealing and fluid handling company with a long history in mechanical seals for pumps and rotating equipment. It competes with PSS Seal in industrial rotating equipment applications, particularly water and process industries.
- Garlock (EnPro Industries): Garlock, part of EnPro Industries, manufactures gaskets, packing, and sealing products for industrial fluid handling. As a broad sealing incumbent, it represents the wider competitive set for PSS Seal's industrial-fluid-handling sealing products.
Emerging players
- Aquadrive (Ocean Drive Marine): Aquadrive supplies marine propulsion accessories including shaft seals and CV joints, with overlapping presence in yacht and commercial marine markets. It is a niche player competing with PSS Seal in marine shaft sealing integrations.
Others
- Volvo Penta (Sealing Solutions): Volvo Penta is a major marine propulsion OEM that specifies and sells integrated propulsion systems including shaft seals. It is an OEM channel influencer comparable to the boat builders PSS works with, and represents both a customer channel and a potential competitive OEM seal supplier.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
PSS Seal social profiles
Digital presencePSS Seal compliance and trust
Trust signalCompliance3 records
PSS Seal financial estimates
Financial estimateRevenue estimate
Valuation estimate
PSS Seal leadership team
Management profileNumber of profiles
Profiles1 record
PSS Seal funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
PSS Seal M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about PSS Seal
What does PSS Seal do?
PSS Seal manufactures mechanical face shaft seals (Packless Sealing System) for marine vessel propulsion and industrial rotating equipment. The product line includes Type A, PRO, Type B, Type C, and Rudder Shaft Seals, along with a Flange & Bladder System, maintenance kits, and accessories such as flow meters, vent valves, and retention collars. Seals create a watertight sealing surface between a rotating stainless steel rotor and a stationary carbon graphite flange, eliminating the need for traditional packing glands.
Is PSS Seal a public or private company?
PSS Seal is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was PSS Seal founded?
PSS Seal was founded in 1981. It employs 11 to 50 people.
Where is PSS Seal based?
PSS Seal is headquartered in Lynnwood, United States, in the North America region.
How does PSS Seal make money?
Four revenue lines are on record. PSS Shaft Seals (Primary) is the primary driver. The others are maintenance Kits, accessories and Components and custom Flange Systems.
Who are PSS Seal's main competitors?
Direct peers on record are Buck Algonquin, Tides Marine and Duramax Marine. Broad incumbents are John Crane, Flowserve Corporation, AESSEAL, A.W. Chesterton and Garlock (EnPro Industries). Aquadrive (Ocean Drive Marine) is listed as an emerging player. Volvo Penta (Sealing Solutions) is listed as an others.
Does PSS Seal have an API?
No public API is recorded for PSS Seal.
What industry is PSS Seal in?
PSS Seal's product category is Marine Mechanical Shaft Seals. Its primary akta.pro industry code is IMAHAGAI, Seals, Gaskets & Fluid Connectors (O-rings, packings, rotary seals, quick couplers), with a secondary code of IMAHANAH, Seals, Valves & Auxiliary Components (for Pumps/Compressors). Its NAICS code is 339991 and its SIC code is 3050.