

💙 Stay slick, stay unstoppable — marine-grade grease that won’t quit!
Sta-Lube SL3121 is a premium 14 oz. tub of blue aluminum complex marine grease engineered for superior water resistance and adhesion. Designed to protect bearings and components in severe wet conditions, it withstands temperatures up to 469°F and is ideal for marine, 4WD, and trailer applications. Trusted by professionals and rated 4.7 stars, it ensures smooth, reliable performance where water and wear are relentless.



























| ASIN | B000CPJMY8 |
| Best Sellers Rank | #42,635 in Automotive ( See Top 100 in Automotive ) #8 in Heavy Duty Vehicle Greases & Lubricants |
| Brand | Sta-Lube |
| Customer Reviews | 4.7 4.7 out of 5 stars (908) |
| Date First Available | March 1, 2006 |
| Exterior | Machined |
| Global Trade Identification Number | 30072213312103 |
| Is Discontinued By Manufacturer | No |
| Item Form | Paste |
| Item Weight | 1 pounds |
| Item model number | SL3121 |
| Liquid Volume | 14 Fluid Ounces |
| Manufacturer | Sta-Lube |
| Manufacturer Part Number | SL3121 |
| Material | Aluminum |
| Model | SL3121 |
| Number of Items | 1 |
| Package Information | Can |
| Product Dimensions | 3.44 x 4.13 x 4.13 inches |
| Recommended Uses For Product | Water |
| Specific Uses For Product | Marine, Freshwater, Saltwater, 4WD, Boat Trailers |
| UPC | 072213312102 |
| Unit Count | 14.0 Ounce |
| Upper Temperature Rating | 469 Degrees Fahrenheit |
| Viscosity | 21 sq-mm/s |
D**N
Good product at reasonable price
I got this to lube bearings on a mini bike. It seems to work great. I can also use it on anything that needs grease that might get wet.
J**O
Reliable choice
I recently used the Sta-Lube SL3121 Water-Resistant Marine Grease to repack the wheel bearings on my boat trailer, and overall, I’m quite satisfied. The grease has a thick, tacky consistency and is notably water-resistant, which is crucial for marine applications. After several trips, the bearings continue to perform smoothly without any signs of water intrusion. However, I noticed that the grease is a bit more challenging to clean off compared to others I’ve used, likely due to its water-resistant properties. Despite this minor inconvenience, I believe it’s a reliable choice for protecting trailer bearings in wet conditions.
S**7
Great for Vintage Bicycles
I use this for greasing all the bearings (bottom bracket, hubs, headset, pedals etc.) of my vintage touring bicycles. It works very well for this purpose, as the grease seems to resist moisture exposure (rain storms, puddles) better than traditional wheel bearing grease does. The consistency of this grease is slightly different (thicker) than traditional bearing grease. I've noticed no difference in rolling resistance compared to using regular grease. Good stuff!
T**N
Good.
Good product.
T**Y
Does what it claims.
Best grease I have ever used on my boat trailer. Will not wash out even after several launches. Boat is used exclusively in salt water and I usually had to replace wheel bearings every 8 to 10 months. More than a year since using this grease and the wheel bearings still have no pits or signs of wear..
I**R
Nice
A good buy
D**T
A must have for bearings that will go long distances
My first marine grade grease was bad because it wasn't rated for long road trips. This passes all concerns as it is marine rated and great for trailer bearings. No issues on a 2000 mile trip.
A**R
Great price / good quality
I used it on my outboard steering, worked nicely.
M**Z
Es tal cual como se muestra en las imágenes
E**Z
Utilizado en el engrase exigente de bicicleta de montaña
J**E
Muy buena grasa, cambio su formula para mejorar, ahora es de complejo de sulfonato de calcio. Lo mejor para alta temperatura y resistencia al agua.
E**N
Excelwnte
E**1
Excelente producto, muy recomendado para proteger artículos metálicos que están expuestos a la intemperie, o que simplemente requieren una grasa con excelente adherencia y viscosidad.
Trustpilot
2 weeks ago
1 month ago