Kroil penetrating oil, Super Lube synthetic grease and Corrosion Block grease beside a grease gun on a yacht deck.

MARINE GREASE & LUBRICANTS

Choose the Right Lubricant for Your Boat Maintenance Task

Shop marine grease, penetrating oils and specialty lubricants for component-specific boat maintenance. Match the product to your equipment requirements, then compare formulas, application formats and package sizes before ordering.

Grease, Lubricants & Penetrating Oils

Explore marine grease, marine lubricants and penetrating oils for maintaining boat hardware and equipment. Compare synthetic grease, water-resistant grease, precision oils, dry-film lubricants and snap or zipper care products by their documented purpose and application.

Choose according to the component and its maintenance requirements. Check the exact product’s specifications, material compatibility and instructions, then confirm the container size and package quantity. Grease tubes, cartridges, aerosols, kits and case packs represent different purchases.

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  • Star brite RV Slide-Out Lubricating Fluid w/Cerflon - 12 oz

    Star brite RV Slide-Out Lubricating Fluid with Cerflon - 12 oz MPN - 78212 SKU: 113386
    MPN: 78212

    $15.99
    $17.59
    $15.99
    RV Slide-Out Lubricating Fluid with Cerflon - 12 ozEnsures smooth operation of RV slide-outs and protects against corrosion. Designed for all metal-to-metal lubrication needs, including hinges and steps on RVs and trailers. The ultra-slick formula with dielectric properties penetrates deeply to extend component lifespan.Features:...
    $15.99
    $17.59
    $15.99
  • Star brite Marine Grade White PTEF Lubricant - 3.7 oz
    Out Of Stock

    Star brite Marine Grade White PTEF Lubricant - 3.7 oz MPN - 85504 SKU: 113287
    MPN: 85504

    $21.99
    $24.19
    $21.99
    Marine Grade White PTEF Lubricant - 3.7 ozProvides superior lubrication and protection for marine and heavy-duty equipment across extreme conditions. Designed for winches, windlasses, turnbuckles, and metal-to-metal applications in saltwater and freshwater. The formula resists wash-off and breakdown while preventing corrosion, seizing, and galling.Features:...
    $21.99
    $24.19
    $21.99
    Out Of Stock
  • Star brite Heavy-Duty White Lithium Grease - 14 oz
    Out Of Stock

    Star brite Heavy-Duty White Lithium Grease - 14 oz MPN - 26214 SKU: 113283
    MPN: 26214

    $18.99
    $20.89
    $18.99
    Heavy-Duty White Lithium Grease - 14 ozReduces friction and prevents corrosion on moving parts in all weather conditions. Designed for gears, cables, chains, automotive components, and marine hardware. The heavy-duty formula with rust inhibitors adheres strongly and performs in both high and low temperature...
    $18.99
    $20.89
    $18.99
    Out Of Stock
  • Star brite Heavy-Duty Lever Grease Gun f/14 oz Cartridge

    Star brite Heavy-Duty Lever Grease Gun for 14 oz Cartridge MPN - 28714 SKU: 113286
    MPN: 28714

    $41.99
    $46.19
    $41.99
    Heavy-Duty Lever Grease Gun for 14 oz CartridgeThe Star brite Lever Action Grease Gun is built for heavy-duty lubrication jobs in marine, automotive, and industrial settings. Compatible with all 14 oz and 14.5 oz grease cartridges, it delivers consistent grease flow at high pressure...
    $41.99
    $46.19
    $41.99
  • Star brite Snap & Zipper Lubricant - Clear, Multi-Use - 1.75 oz

    Star brite Snap & Zipper Lubricant - Clear, Multi-Use - 1.75 oz MPN - 89102P SKU: 113288
    MPN: 89102P

    $12.99
    $14.29
    $12.99
    Snap & Zipper Lubricant - Clear, Multi-Use - 1.75 ozProtects snaps and zippers from corrosion, wear, and salt spray damage. Designed for boat enclosures, vinyl cushions, covers, and outdoor gear. The formula creates a protective layer that keeps metal and plastic components operating smoothly...
    $12.99
    $14.29
    $12.99
  • Star brite Pistol Grease Gun w/Marine-Grade Cartridge - 3 oz

    Star brite Pistol Grease Gun with Marine-Grade Cartridge - 3 oz MPN - 28703 SKU: 113285
    MPN: 28703

    $42.99
    $47.29
    $42.99
    Pistol Grease Gun with Marine-Grade Cartridge - 3 ozPerformance Mini Grease Gun with Cartridge.Features: MARINE-GRADE PERFORMANCE - Protects against saltwater, rust, and corrosion:** The included NLGI #2 cartridge is specifically formulated to safeguard your equipment in harsh marine environments. EASY ONE-HANDED OPERATION - Precision...
    $42.99
    $47.29
    $42.99
  • Super Lube Food Grade Anti-Seize with Syncolon® - 11oz *Case of 12Super Lube Food Grade Anti-Seize with Syncolon® - 11oz *Case of 12

    Super Lube Food Grade Anti-Seize with Syncolon® - 11oz *Case of 12 MPN - 31110-CASE SKU: 108302
    MPN: 31110-CASE

    $262.32
    $288.55
    $262.32
    Food Grade Anti-Seize with Syncolon® - 11oz *Case of 12Super Lube® Food Grade Anti-Seize Lubricant with Syncolon® is used to improve gasket performance and removal and prevents thread galling during installation. It is also used in thermal cycling, and dissimilar metal corrosion and it...
    $262.32
    $288.55
    $262.32
  • Kroil Penephite Penetrant - Aerosol - 13oz Can with Graphite *Case of 12

    Kroil Penephite Penetrant - Aerosol - 13oz Can with Graphite *Case of 12 MPN - PH132-CASE SKU: 108294
    MPN: PH132-CASE

    $343.92
    $378.31
    $343.92
    Penephite Penetrant - Aerosol - 13oz Can with Graphite *Case of 12Excellent penetration and lubrication in high-temperature environments.Graphite Action for High TemperaturesPenephite, Kroil Penetrant with Graphite is a unique blend of oils, solvents, and graphite engineered to penetrate the smallest gaps of corroded metals...
    $343.92
    $378.31
    $343.92
  • Super Lube O-Ring Silicone Grease - 3oz Tube *Case of 12Super Lube O-Ring Silicone Grease - 3oz Tube *Case of 12

    Super Lube O-Ring Silicone Grease - 3oz Tube *Case of 12 MPN - 93003-CASE SKU: 108303
    MPN: 93003-CASE

    $241.92
    $266.11
    $241.92
    O-Ring Silicone Grease - 3oz Tube *Case of 12Using Super Lube® Silicone O-Ring Grease during installation helps protect an O-Ring from damage by abrasion, pinching, or cutting. It also helps to seat the O-Ring properly, speeds up assembly operations, and improves automated assembly.Lubricating the...
    $241.92
    $266.11
    $241.92
  • Kroil Original Penetrant - Aerosol - 16.5oz Can - Aerokroil Formula *Case of 12

    Kroil Original Penetrant - Aerosol - 16.5oz Can - Aerokroil Formula *Case of 12 MPN - KS162-CASE SKU: 108297
    MPN: KS162-CASE

    $456.84
    $502.52
    $456.84
    Original Penetrant - Aerosol - 16.5oz Can - Aerokroil Formula *Case of 12Loosen frozen metal parts professionally, with Kroil Original Penetrant in liquid and aerosol (Aerokroil) formulas. Discover why Kroil has been trusted to help loosen bolts in various applications since 1939. Loosen frozen...
    $456.84
    $502.52
    $456.84
  • Super Lube Silicone Dielectric & Vacuum Grease - 3oz Tube *Case of 12Super Lube Silicone Dielectric & Vacuum Grease - 3oz Tube *Case of 12

    Super Lube Silicone Dielectric & Vacuum Grease - 3oz Tube *Case of 12 MPN - 91003-CASE SKU: 108304
    MPN: 91003-CASE

    $220.08
    $242.09
    $220.08
    Silicone Dielectric & Vacuum Grease - 3oz Tube *Case of 12Super Lube® Silicone Dielectric Grease is an NLGI Grade 2 non-curing silicone compound utilized for sealing, protection, and insulating electrical components and connectors. It is waterproof and protects against moisture and other contaminants in...
    $220.08
    $242.09
    $220.08
  • Kroil Silikroil Penetrant - Aerosol - 16.5oz Can with Silicone *Case of 12

    Kroil Silikroil Penetrant - Aerosol - 16.5oz Can with Silicone *Case of 12 MPN - SK162-CASE SKU: 108295
    MPN: SK162-CASE

    $483.96
    $532.36
    $483.96
    Silikroil Penetrant - Aerosol - 16.5oz Can with Silicone *Case of 12Engineered to loosen frozen metal parts and provide extra lubrication for long-lasting protection.The Penetrating Oil Used By ProsWhen freeing corroded items in tough spaces, nothing rivals powerful, industry-proven Kroil penetrating oil. Used and...
    $483.96
    $532.36
    $483.96
  • Kroil Silikroil Penetrant - Aerosol - 10oz Can with Silicone *Case of 12
    Out Of Stock

    Kroil Silikroil Penetrant - Aerosol - 10oz Can with Silicone *Case of 12 MPN - SK102-CASE SKU: 108296
    MPN: SK102-CASE

    $332.76
    $366.04
    $332.76
    Silikroil Penetrant - Aerosol - 10oz Can with Silicone *Case of 12Engineered to loosen frozen metal parts and provide extra lubrication for long-lasting protection.The Penetrating Oil Used By ProsWhen freeing corroded items in tough spaces, nothing rivals powerful, industry-proven Kroil penetrating oil. Used and...
    $332.76
    $366.04
    $332.76
    Out Of Stock
  • Kroil Original Penetrant - Aerosol - 10z Can - Aerokroil Formula *Case of 12
    Out Of Stock

    Kroil Original Penetrant - Aerosol - 10z Can - Aerokroil Formula *Case of 12 MPN - KS102-CASE SKU: 108300
    MPN: KS102-CASE

    $326.88
    $359.57
    $326.88
    Original Penetrant - Aerosol - 10z Can - Aerokroil Formula *Case of 12Loosen frozen metal parts professionally, with Kroil Original Penetrant in liquid and aerosol (Aerokroil) formulas. Discover why Kroil has been trusted to help loosen bolts in various applications since 1939. Loosen frozen...
    $326.88
    $359.57
    $326.88
    Out Of Stock
  • Kroil Original Penetrant - Aerosol - 13oz Can - Aerokroil Formula *Case of 12

    Kroil Original Penetrant - Aerosol - 13oz Can - Aerokroil Formula *Case of 12 MPN - KS132-CASE SKU: 108299
    MPN: KS132-CASE

    $391.08
    $430.19
    $391.08
    Original Penetrant - Aerosol - 13oz Can - Aerokroil Formula *Case of 12Loosen frozen metal parts professionally, with Kroil Original Penetrant in liquid and aerosol (Aerokroil) formulas. Discover why Kroil has been trusted to help loosen bolts in various applications since 1939. Loosen frozen...
    $391.08
    $430.19
    $391.08

Check Product Compatibility


Match the product to your surface, finish, tool or equipment before ordering.

Review Product Details


Check the size, quantity and included items to choose the right option for your task.

Follow Product Directions


Review manufacturer instructions for preparation, application and any use restrictions.

Product Selection Support


Need help choosing? Contact our team with your task and the product you are considering.

Four Checks Before Choosing a Marine Lubricant

Compare the component, product role, compatibility requirements and package format to narrow your options.

  1. Match the Component

    Choose marine lubricants according to the part being maintained. Bearings, fittings, seals, fasteners and canvas hardware can require different products, so check the equipment’s maintenance instructions before selecting a formula.

  2. Choose the Product Role

    Marine grease, penetrating oil and dry-film lubricants serve different maintenance needs. Identify whether the task calls for ongoing lubrication, assistance with seized hardware or a specialty product for a specific component.

  3. Check Compatibility

    Review lubricant compatibility with the exact component and nearby materials. Check the product’s guidance for seals, plastics and painted finishes rather than assuming a marine label establishes universal suitability.

  4. Confirm Format & Quantity

    Compare grease cartridges, tubes, tubs and spray containers against your application setup. Confirm cartridge fit, pack quantity and included items so a single unit, refill, grease-gun kit or case pack matches your order.

Match Marine Lubricants to Your Component’s Requirements

Technician checking a boat component against maintenance instructions beside Super Lube grease and Kroil penetrating oil.

Choosing marine grease or another marine lubricant starts with the component’s maintenance requirements. A bearing, O-ring, threaded fastener and canvas zipper may need different formulas. Check the equipment manual for the required lubricant type, specification and application method before comparing products.

If you are considering a penetrating oil, replacement grease or specialty formula, have the equipment model, component details and existing lubricant information ready. These details help narrow relevant options and identify the product compatibility guidance to verify before ordering.

How to Choose Marine Grease and Boat Lubricants

Compare marine grease, penetrating oils and specialty boat lubricants using these five checks. Start with the maintenance task, then verify the exact product and package.

  1. Identify the Maintenance Task

    Decide whether you need lubrication, help loosening rusted hardware, seal care or a specialty maintenance product. A penetrating oil for seized fasteners serves a different role from grease specified for ongoing component lubrication.

  2. Read the Equipment Requirements

    Check whether the equipment calls for grease, oil or a dry-film lubricant. Match any required grade, viscosity or formulation to the exact product documentation rather than selecting solely by brand or marine labeling.

  3. Review Material Compatibility

    Identify nearby materials that may contact the lubricant, including seals, O-rings, plastics and painted finishes. Review the product’s compatibility guidance and exclusions before choosing a marine lubricant for that component.

  4. Match the Application Format

    Compare grease tubes, cartridges, tubs, aerosols and precision applicators against the maintenance procedure. Check whether your grease gun accepts the specified cartridge and whether the product’s residue suits the application.

Clean, Treat & Protect Your Boat Hardware

Preparation, targeted treatment and ongoing lubrication serve different maintenance roles. Follow the component’s approved procedure and choose marine grease, penetrating oils or specialty lubricants for the work required. Not every task needs all three steps.

  1. Clean — Prepare the Component

    Check the equipment and product instructions for removing dirt, contamination or existing lubricant before treatment. Use a cleaning method approved for the component and nearby materials. Preparing a fitting, fastener or mechanism helps you assess its condition and follow the specified lubrication procedure.

  2. Treat — Address the Maintenance Task

    Consider penetrating oil when its stated purpose matches rusted or seized metal hardware. For seals, snaps, zippers or other specialty parts, compare products specifically intended for that application. Check formula differences and material restrictions before applying a treatment.

  3. Protect — Apply the Specified Lubricant

    Choose marine grease, oil or a dry-film lubricant that meets the component’s ongoing maintenance requirements. Where corrosion protection is needed, verify that the exact product documents that function. A penetrant or protective treatment does not automatically replace the specified lubricant.

Single Units, Refills & Case Packs: Choose the Right Quantity

Comparison of a single Kroil penetrating oil can, Super Lube grease refills and a Kroil case pack.

Marine grease and penetrating oils are available in different container formats and package quantities. Compare tubes, tubs, cartridges, bottles and aerosols according to the product directions and your application setup. Check individual container sizes separately from the total quantity supplied.

A single lubricant container, replacement cartridge, multipack and case pack represent different orders. Before purchasing, confirm the exact product MPN, package quantity and included items. For grease-gun refills, check the cartridge format against your existing equipment.

Compare Marine Grease, Penetrating Oils & Specialty Lubricants

Use this comparison to identify the product role that matches your maintenance task. Confirm the exact product specifications and component requirements before ordering.

Product Type & Selection Focus Verify Before Ordering
Marine Grease — For components whose maintenance procedure specifies grease. Compare supported synthetic, white lithium and water-resistant formulas. Check the required grade, formulation, approved application, material compatibility and container format.
Penetrating Oils — For rusted or seized metal hardware where the exact formula is approved. Check formula differences, nearby materials, application restrictions and required follow-up maintenance.
Precision & General-Purpose Oils — For components requiring the matching oil and application method. Verify the required specification, viscosity where relevant, residue and applicator format.
Dry-Film Lubricants — For applications calling for a documented dry-film product. Check approved materials, preparation instructions, residue requirements and component restrictions.
O-Ring & Seal Lubricants — For the seal-care applications stated in the product documentation. Verify the exact seal material, equipment guidance and compatibility with the selected formula.
Snap & Zipper Lubricants — For manufacturer-approved canvas hardware, snaps and zippers. Check the hardware type, surrounding materials and product-specific application instructions.
Anti-Seize Products — For threaded assembly procedures that specifically call for anti-seize. Verify fastener materials, the approved formulation and equipment assembly or torque instructions.
Marine Grease Guns & Kits — Application equipment for compatible cartridges and fittings. Check cartridge format, fitting connection, included grease, kit contents and refill compatibility.

What Our Customers Says

Excellent marine grease for trailer wheel bearings

Used this heavy-duty marine grease on my boat trailer wheel bearings and gimbal bearing. It holds up exceptionally well against saltwater washouts and provides smooth lubrication under high heat and heavy loads.
Travis Henderson Verified buyer
August 2026

Fast-acting penetrating oil freed rusted prop shaft bolts

Had two stubborn, corrosion-locked bolts on the lower unit housing. Sprayed this penetrating oil, let it soak for 10 minutes, and the hardware loosened cleanly without rounding off or breaking.
Dustin Mercer Verified buyer
July 2026

Smooth operation for steering cables and throttle linkages

Lubricated the mechanical steering cable and outboard shift linkages with this marine lubricant. Eliminated stiff cable movement instantly and keeps linkages shifting smoothly.
Gavin Callahan Verified buyer
June 2026

Water-resistant lithium grease for tilt and trim pins

Applied to the tilt/trim cylinder pivot pins and engine swivel bracket. It stays put without washing away during launches or high-speed runs in rough water.
Leon Radford Verified buyer
May 2026

Fast delivery and great workshop lubricant spray

Arrived well-packaged and leak-free within a couple of days. The spray applicator allows precise spraying into tight mechanical splines and pivot joints.
Wesley Vance Verified buyer
April 2025

Prevents corrosion on exposed trailer jack gears

Coated the trailer jack winch gears and coupler latch with this protective grease. Prevents binding and stops rust formation from constant exposure to salt air.
Nathanael Drake Verified buyer
March 2025

Must-have lubricant kit for outboard maintenance

Essential product for routine prop shaft greasing during propeller changes. Prevents prop hub seizing and ensures hassle-free removal during maintenance.
Colton Briggs Verified buyer
February 2025

Helpful Guides

Explore guides and tips related to this collection.

Corrosion Block waterproof grease, Kroil penetrating oil and Super Lube lubricant on a marine maintenance bench.

Marine Grease, Penetrating Oil & Corrosion Inhibitor: How to Choose

MARINERS WAREHOUSE · MARINE MAINTENANCE GUIDE A stiff fitting, a corroded bolt and an exposed metal bracket can look like...

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Corrosion Block grease and Super Lube O-Ring silicone grease beside trailer bearings, seals and a grease gun.

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MARINERS WAREHOUSE · MARINE MAINTENANCE GUIDE Marine grease selection is about matching the component, not finding the boldest waterproof claim....

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Super Lube grease cartridges in small and full-size formats beside grease guns and an open cartridge carton.

Grease Cartridge Sizes, Grease Guns & Case Packs Explained

MARINERS WAREHOUSE · MARINE MAINTENANCE GUIDE A grease listing can describe a single cartridge, several refills, a gun kit or...

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Frequently Asked Questions

Which marine grease should I choose?

Choose marine grease whose documented specifications match your component’s maintenance requirements. Check the required grade, formulation, approved materials and operating conditions, then compare the exact product and package. No single grease suits every boat component.

Can penetrating oil replace marine grease?

Not automatically. Penetrating oil may help loosen rusted or seized hardware without meeting the component’s ongoing grease requirement. Follow the equipment’s maintenance procedure and verify the exact formula before selecting a follow-up lubricant.

Can I mix different grease types?

Do not assume different grease types are compatible. Check the manufacturers’ grease compatibility guidance and the equipment’s changeover procedure. Similar color or marine labeling does not establish that two formulas can be mixed.

How do I know whether a grease cartridge fits my grease gun?

Compare the grease gun’s specified cartridge format and dimensions with the exact refill. Also check package contents: some listings include a gun and grease, while others contain cartridges or equipment only.

What lubricant should I use on boat snaps and zippers?

Choose a boat snap or zipper lubricant whose directions approve the hardware and surrounding materials. Review application instructions rather than assuming a general grease or penetrating spray is suitable.

Is the listed price for one container or a case pack?

The quantity depends on the exact listing. Check the package label, number of containers and size of each unit on the product page. If the title and description disagree, contact our team before ordering.

Need Help?

 Find the Right Product Information Before You Order 

Share the component you are maintaining and the product you are considering. Whether you are comparing marine grease, penetrating oil or a specialty lubricant, clear equipment requirements and package details help narrow the options and identify what to verify before ordering.

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